A cell is a system
True
False

Answers

Answer 1

Answer: True

Explanation:

Tissues perform functions that are specializations of the normal function of individual cells.

Answer 2

Answer:

true

Explanation:


Related Questions

Explain how an oil spill devastates marine life when animals get covered by the toxic sludge

Answers

Answer:

It poisons animals, it coats reefs, and damages ecosystems.

Explanation:

It is the same principle with humans. If we drink oil ( the actual stuff from for example, Spindletop) we would get poisoned, and die. If we eat toothpaste over and over, we have to go to poison control so they can pump your stomach. If we drink cyanide, we will die. If we get poison in our food, we will either starve, try to fix it, or we get poisoned and die. If we were some fish, we might not be able to fix the water, so we starve, or we get poisoned.

It is the same lines as the animals, our pollution and oil floods our environment and we start to die.

Sponsered by: STAF

Save the Animals Foundation

Hope this helps!

I was kidding about the sponsership.

Answer:It is the same principle with humans. If we drink oil ( the actual stuff from for example, Spindletop) we would get poisoned, and die. If we eat toothpaste over and over, we have to go to poison control so they can pump your stomach. If we drink cyanide, we will die. If we get poison in our food, we will either starve, try to fix it, or we get poisoned and die. If we were some fish, we might not be able to fix the water, so we starve, or we get poisoned.It is the same lines as the animals, our pollution and oil floods our environment and we start to die.

Explanation:

explain what you think what happen to rubber if too manyn cross limks are formed.​

Answers

Answer:

The rubber becomes brittle and can break in your hand. The explanation for why this happens concerns cross-linking bonds. Ultra-violet light from the sun provides the polymer molecules with the activation energy they need to be able to form more cross-links with other chains.

The Handbook of Chemistry and Physics lists the density of a certain liquid to be 0.7988 g/mL. Taylor experimentally finds this liquid to have a density of 0.7925 g/mL. What is his percent error?

Answers

Answer:

The answer is 0.79%

Explanation:

The percentage error of a certain measurement can be found by using the formula

[tex]P(\%) = \frac{error}{actual \: \: number} \times 100\% \\ [/tex]

From the question

actual density = 0.7988 g/mL

error = 0.7988 - 0.7925 = 0.0063

So we have

[tex]P(\%) = \frac{0.0063}{0.7988} \times 100 \\ = 0.788683024...[/tex]

We have the final answer as

0.79 %

Hope this helps you

Match each tool on the left with its most likely use on the right by choosing the correct number. ruler scale telescope thermometer microscope 1. Measuring the weight of an apple 2. Studying a distant object 3. Studying a very small object 4. Measuring the length of a book 5. Measuring the temperature of a cup of tea

Answers

Answer:

1. Measuring the weight of an apple- scale.

2. Studying a distant object- telescope.

3. Studying a very small object- microscope.

4. Measuring the length of a book- ruler.

5. Measuring the temperature of a cup of tea- thermometer.

Explanation:

1. A scale or measuring scale is used to measure or take the weight of any object. It can be either an analog or digital scale as long as the measurements can be taken from it. So, measuring the weight of an apple can be done on a measuring scale.

2. A telescope is an instrument that is used in scientific, especially in space explorations, to study a distant object in the universe/ sky. It gives a clear image and enables a person to view things closer than they are. So, a telescope can be used to study distant objects.

3. A microscope is used to study very different small objects, such as microbes and other organisms. It enlarges the objects to be viewed and thus, enables them to be studied in detail.

4. A ruler may be used to measure the length of a book. It has indications or marks by which the lengths can be taken.

5. A thermometer is an instrument that is used to measure the temperature of anything, be it a person or even other things such as food and even a cup of tea.  

Answer:

Match each tool on the left with its most likely use on the right by choosing the correct number.

4

ruler

1

scale

2

telescope

5

thermometer

3

microscope

Explanation:

Pilots of hot air balloons are able to steer them somewhat by moving them up or down to enter different air currents that move in different directions. Explain how the flame can be used to do that.

Answers

Answer:

To understand this first we must understand what is happening at the molecular level. When we heat any substance it changes its state of matter because its molecules get excited. For example, when we heat water it turns into gas so the molecules get excited. The hot air balloon will move faster if we add heat because the gas molecules will get excited and push against the balloon, making it faster. If we start removing heat, the balloon's acceleration will slow down because the molecules will get less excited.

Hot air balloons flies by means of it being lighter than air

The flame can be used to move the pilot to different directions by increasing the temperature of the air in the balloon and therefore, the volume, therefore, decreasing the density of the air which changes the elevation of the balloon to the appropriate elevation having winds moving in the desired direction

The principle by which the above process works is as follows:

According to Charles law, the volume of a mass of gas is directly proportional to its Kelvin temperature

V ∝ T

[tex]\dfrac{V_1}{T_1} = \dfrac{V_2}{T_2}[/tex]

[tex]V_2 = T_2 \times \dfrac{V_1}{T_1}[/tex]

[tex]Density, \rho = \dfrac{Mass, \ m}{Volume, \ V}[/tex]

Therefore, as the temperature is increased, the volume occupied the mass gas increases, and therefore, the density decreases

The principle on which the hot air balloon operates on is the principle that hot air is less dense than and therefore, rises above cool air

Therefore, the pilot of an hot air balloon heats up the air in the balloon to allow the balloon to rise and the pilot switches off the burner so that the air in the balloon cools and the balloon looses altitude

The mechanism of the hot air balloon does not have a steering, and therefore, the wind direction is used to steer the balloon

The direction of the wind is different at different altitude, such that by obtaining the direction of the wind at a given altitude, the pilot can raise or lower the balloon up or down to the altitude having the desired wind direction, by increasing the temperature of the air in the balloon by switching on the burner to go to a higher altitude, or by switching off the burner so the air in the balloon cools and the balloon loses some of its altitude to reach the wind going in the direction of the pilot

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Three wax palm trees are kept at different humidity levels inside of a greenhouse for 12 weeks. One tree is left outside in normal conditions. The height of the tree is measured once a week. Which of the following is your controlled variable?

Answers

The tree left in normal conditions, since you can use that to see how the humidity affected the others, whether they allowed them to grow better or worse.

What human activity constitutes to air pollution?

A) construction

B) reforestation

C)habitats restoration

D)dam development

Answers

Answer:

The answer is A. Construction. The production of raw materials for construction in factories is harmful for the environment due to CO2 emissions. The chemicals used in construction and the diesel used by construction vehicles are also harmful to the environment.

Explanation:

In an ecosystem , human activity which constitutes to air pollution is construction.

What is an ecosystem?

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the ecosystem through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.There are different types of ecosystems.

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What happens to the oxygen and carbon dioxide as we breathe

Answers

Answer:

Your lungs deliver oxygen and remove carbon dioxide from your blood in a process called gas exchange. Gas exchange happens in the capillaries surrounding the alveoli, where the oxygen that is breathed in enters the circulatory system and carbon dioxide in the blood is released to the lungs and then breathed out.

Your lungs deliver oxygen And remove carbon dioxide from your blood in a process called gas exchange. Gas exchange happens in the capillaries surrounding the alveoli, where the oxygen that is breathed in enters the circulatory system and carbon dioxide in the blood is released to the lungs and then breathed out. ^^^^

Is sugar (C12H22O11) an element or a compound?
Group of answer choices

Compound

No answer text provided.

No answer text provided.

Element

Answers

I believe that sugar is a compound because there are elements that make up sugar

first 30 elements with their atomic mass​

Answers

A few important ones........

Hydrogen - H - 1 - 1

Helium - He - 2 - 4

Lithium - Li - 3 - 7

Berelium - Be - 4 - 9

Boron - B - 5 - 11

Carbon - C - 6 - 12

Nitrogen - N - 7 - 14

Oxygen - O - 8 - 16

Fluorine - F - 9 - 19

Neon - Ne - 10 - 21

Sodium - Na - 11 - 23

Magnesium - Mg - 12 - 24

Aluminium - Al - 13 - 27

Silicon - Si - 14 - 28

Phosphorous - P - 15 - 31

Sulfur - S - 16 - 32

Chlorine - Cl - 17 - 35.5

Argon - Ag - 18 - 36

Potassium - K - 19 - 39

Calcium - Ca - 20 - 40

Scandium - Sc - 21 - 45

Vanadium - Vn - 22 - 48

Titanium - Ti - 23 - 51

Vanadium - Vn - 24 - 52

Manganese - Mn - 25 - 55

Iron - Fe - 26 - 56

Cobalt - Co - 27 - 59

Nickle - Ni - 28 - 59

Copper - Cu - 29 - 64

Zinc - Zn - 30 - 65

An object starts from rest and exhibits the motion represented by the graph. The object’s average velocity during the 3 second to 5 second time interval is approximately –
8.4 m/s


3.2 m/s


4.8 m/s


.0125 m/s

Answers

Answer:

8.4 m/s

Explanation:

Initial velocity of the object is 0 as it was at rest.

We need to find the object’s average velocity during the 3 second to 5 second.

We can see from the graph that from 3 s to 5 s, the graph is a straight line. If we take the slope we can find the average velocity during the 3 second to 5 second.

Displacement between 3 s to 5 s is :

D = 24.8 m - 8 m = 16.8 m

Time = 5 s - 3 s = 2 s

Now,

Average velocity,

[tex]v=\dfrac{\Delta y}{\Delta x}\\\\y=\dfrac{16.8\ m}{2\ m}\\\\y=8.4\ m[/tex]

So, the object’s average velocity during the 3 second to 5 second is 8.4 m/s.

A cake recipe calls for 0.75 kg of butter. How many grams of butter would be needed for 4 cakes

Answers

Answer:

So if you divide the kg of butter and the cake that will be your answer and then you should have a fraction so the fraction would be 0.25 over 2 because you simplified it. 0.25/2

Explanation:

Does anybody know this question

Answers

30 feet/sec

Hope this helped!

Which student’s responses are correct?

Answers

Answer:j

Explanation:im not stupid??

Answer:

2

Explanation:

student 2 is correct because the number of protons determines what element an atom is, and the number of valence electrons shows how the atom bonds and its reactivity.

What does an atomic number represent in an atom?


A) number of electrons


B) number of protons


C) number of protons and neutrons


D) number of neutrons

Answers

Answer:

C, number of protons and neutrons

where are the electrons found in Bohrs atomic model

Answers

Answer:

Explanation

In the Bohr model of the atom, electrons travel in defined circular orbits around the nucleus. The orbits are labeled by an integer, the quantum number n. Electrons can jump from one orbit to another by emitting or absorbing energy.

If an electron is transferred from A to B in the chemical reaction shown here,
what molecule has been reduced?
AB
A+
A
B

Answers

if an electron is passed from Ago B then Slides electrons which makes it electropositive i.e A+

According to the redox reactions , when an electron is transferred from A to B , B molecule has been reduced as it gains electrons.

What are redox reactions?

Redox reactions comprise of two parts a reduced part and an oxidized part, which occur simultaneously . The part which is reduced gain electrons and hence there is a increase in oxidation state of the species.

While, the part which is oxidized looses electrons and hence there is a decrease in oxidation state of the species.During redox reactions, there is no net change in the number of electrons . Electrons which are given off in oxidation are used up in reduction.

The ion or molecule which accepts electrons is called as oxidizing agent while the ion or molecule which donates electrons is called as a reducing agent.

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Which of the following is a molecular formula?

MgCl₂
Al₂O₃
NO₂
CaO

Answers

Answer:

The molecular formula of a compound may be the empirical formula, or it may be a multiple of the empirical formula. For example, the molecular formula of butene, C4H8, shows that each freely existing molecule of butene contains four atoms of carbon and eight atoms of hydrogen. Its empirical formula is CH2.

Explanation:

If Neon atom has 10 protons and 12 neutrons, what would be this
Atom's mass number?

Answers

Answer:

Hmmmm,   Z=10   the element is not fluorine, and its not sodium.

Explanation:

If you are doing your chemistry homework, you must have a Periodic Table beside you. You will also be supplied a Periodic Table in every test in Chemistry and Physics you will ever sit. So get your Periodic table, and consider the following. It has 10 electrons, 10 fundamental negative charges. Since the element is neutral, it has 10 fundamental positive charges, 10 protons, in its nucleus. In the nucleus there are also 12 massive, neutral particles, 12 neutrons. The number of protons,  Z, defines the atomic number, and the Periodic Table is arranged according to  Z.

.


If 10 milliliters of liquid has a mass of 70 grams, what is its density?
O 7 g/mL
70 g/mL
0.7 g/mL
700 g/mL

Answers

Answer:

The answer is 7 g/mL

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\[/tex]

From the question

mass = 70 g

volume = 10 mL

We have

[tex]density = \frac{70}{10} \\ [/tex]

We have the final answer as

7 g/mL

Hope this helps you

Solution ,colloid ,or suspension

Answers

Answer:

colloid

Explanation:

i think she making meth in her basement

Colloid lol that woman is crazy

An atom of an element contains 6 protons, 6 neutrons, and 6 electrons. An atom that is a different isotope of this element would contain —
A.
6 protons, 7 neutrons, and 6 electrons.


B.
6 protons, 6 neutrons, and 7 electrons.


C.
7 protons, 6 neutrons, and 6 electrons.


D.
7 protons, 7 neutrons, and 7 electrons.

Answers

Answer:

A

Explanation:

An atom that is a different isotope of a given element would contain 6 protons, 7 neutrons, and 6 electrons. Therefore, option (A) is correct.

What is an isotope?

Isotopes are atoms of an element that contain the same atomic number as the original element but a different atomic mass. Isotopes of an element possess the same number of electrons and the number of protons but different numbers of neutrons in their respective nucleus.

For example, the isotopes of carbon are carbon-14, carbon-13, and carbon-12. Carbon-14 has a total of 8 neutrons, carbon-13 have a total of 7 neutrons, and carbon-12 has a total of 6 neutrons. So all the isotopes of carbon have different numbers of neutrons.

Given element has 6 protons, 6 neutrons, and 6 electrons. So the isotope of this element will have  6 protons, and 6 electrons but not 6 neutrons. Therefore, the element with 6 protons, 7 neutrons, and 6 electrons is the isotope of the given element.

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please help me quickly ​

Answers

Answer: 2

Explanation:

Answer:

It is two

Explanation:

Which of the following statements is most accurate?
A. When liquid water is heated, the molecules move faster.
B. When liquid water is heated, the molecules collide more often.
C. When liquid water is heated, collisions between molecules are more violent.
D. All of the above.

Answers

Answer:

D: All of the above

Explanation:

It's all of the above, they are all pretty similar to the accurate answer.

Answer:

D

Explanation:


Were any scientific investigations conducted for proposing the theory? Was this theory tested or simply expected?

Answers

Answer: Yes

Explanation:

Scientific theory can be defined as the solutions to the problems of the queries related to natural phenomena or it is the explanation for different aspects of the natural world. It is done with repeated testing procedure. To prove the facts of the theory, repeated experimental tests, and observations are done. The theories are tested under the controlled conditions of the experimental set up.

On the basis of the above description, we can say that the scientific investigations are done in the form of experimentation trials before proposing  a theory. The theory is tested and is not simply expected.

Answer: Yes, Clements compared ecological succession with the development of organisms. Yes, this theory was tested.

Explanation:

why sodium is active element...​

Answers

Answer:

here is your answer

Explanation:

1. sodium sodium is very reactive metal

2. when it exposed in air it automatically form Na2O.

3. when when it put in water it reacts visoroustly and start burning on water.

( due to this it is called active element)

The other answer here is correct, but if you’re looking from a more structural view then here is it:
Sodium has only one electron it it’s outermost orbital, and because of this it has a really high tendency In giving up that electron in order to get into a more stable electron configuration.

Which statement describes potential energy?
A energy of motion
B.stored energy
C energy due to heat
D. used energy

Answers

Answer:

B. stored energy

hope this helps!!

All cells share certain functions necessary for life. Which of the following is not a function performed by every cell?

Answers

Answer:

there is no following so there isnt a answer

Explanation:

2 Which thing has the most mass?
O marble
elephant
O fork
Obaseball

Answers

Explanation:

marble is the correct answer

Answer:

Elephant

Explanation:

An elaphant is the option with the most mass.

Hope this helps! Please makr brainliest! Stay safe, God bless and happy studying!

What are the three was main States of matter?

Answers

Answer:

liquid, solid, gas

Explanation:

Solid, Liquid and gaseous

There are 5 states of matter

1.) Solid

2.) Liquid

3.) Gaseous

4.) Plasma

5.) Bose Einstein

the First three are main

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Students measured the temperatures of the water at different depths in LakeSkywalker and found that the temperature varied.I: __________________ D:__________________ C:__________________8. The amount of pollution produced by cars was measured for cars using gasolinecontaining different amounts of lead.I: __________________ D:__________________ C:__________________9. Four groups of rats are first massed and then fed identical diets except for theamount of vitamin A they receive. Each group gets a different amount. After 3weeks on the diet, the rats masses are measured again to see if there has beena decrease.I: __________________ D:__________________ C:_ Through: (1,1), slope=1/4 9) The only language used in personal narratives is sensory language.TrueFalse what letter grade is a 38/49 When you must add three vectors together, what is not true this process? You must only give a magnitude of the resultant vector It does not matter what order you add the vectors You can move the vectors parallel to each other You must connect the head of each vector with the tail of the next vector Which expression does not belong with the other three? What is a help desk technician?O An individual who troubleshoots and repairs smartphone hardware componentsO An individual who manages and maintains network serversO An individual who diagnoses and resolves users' technical hardware and software problemsAn individual who manages and maintains a network infrastructure Which part of the Declaration of Independence stated that the colonies recognized themselves as an independent nation? A. Declaration B. Grievances C. Preamble D. Preface EZ QUESTIONRead the scenario and answer the question that follows. Matt does not like the way other members of his group have been acting lately. They are making bad choices in his opinion, so he calls several of them over to talk. He sits them down as he stands bent over them and begins to explain why he is upset with them. As he yells at each one, he points his finger at them. What action should Matt take in order to communicate more effectively?Ask each friend to explain himself, the choices he has made, why they were bad choices, and what can be done in the future to not make the same choices.Explain the choices he has observed each friend make, discuss his thoughts and feelings about the choices, and ask that they agree on better choices to make.Say he is sorry for yelling, explain that it had to be done, explain why he does not like the choices the friends are making, and make them say they are sorry.Tell his friends what he thinks better choices would be for them to make, say he is sorry for all the finger pointing, and shake hands before walking away. what is the difference between shape and form.describe geometric shapes/forms. 1.biological interactions:2.commensalism:3.competition:4.ecosystem:5.host:6.mutualism:7.parasitism:8.parasite:9.predation:10.predator:11.prey:12.symbiosis:Column Ba. relationship in which one organism benefits while the other organism is harmedb. an organism that lives inside or near another organism (host), typically using the host for nourishment and shelterc. an organism that is killed and/or eaten by another organism (predator)d. when two or more organisms need the same resource (food, water, space, territory, mates) for survivale. the relationship between two organisms that live together in an environmentf. a relationship in which one organism benefits while the other organism is neither helped nor harmedg. a relationship in which two organisms benefit from each otherh. the effects that the organisms in a community have on one anotheri. an organism that harbors another organism (parasite) inside or near its own body, typically providing nourishment and shelter for the parasitej. a biological interaction in which a predator feeds on its preyk. all living and nonliving things that interact with each other in an environmentl. an organism that kills and eats other organisms (prey) mary bought a blouse and a pair of jeans for 38.50 if jeans cost 12.50 more then the blouse how much did she pay for the jeans What does the blood pick up? Write the equation of the line passing through (-3,4) and perpendicular to -2x+7y=-3. 3. How is scientific knowledge different from other types of knowledge? The recipe makes enough stew for 6 people, and the ingredients cost $9.75. How much would it cost to serve 24 people?A student solved the problem using the proportion StartFraction 6 over 9.75 EndFraction = StartFraction c over 24 EndFraction Explain the error in this proportion. What is judicial review?A.The power of the Judicial Branch to review laws, Executive orders, and Executive acts to ensure that they are Constitutional.B.The power of the Judicial Branch to impeach the President and members of Congress.C.The power of the Legislative Branch to appoint or remove Supreme Court Judges at any time.D.The power of the Executive Branch to deem Supreme Court rulings unconstitutional. Plzzz help me answer this question!!,! (02.05 LC)Triangle PQR is transformed to similar triangle P'Q'R'.A coordinate grid is shown from negative 10 to 0 to positive 10 on both x- and y-axes at increments of 1. A triangle PQR has P at ordered pair 3, 3, Q at 6, 3, R at 3, 6. A polygon P prime Q prime R prime has P prime at ordered pair 1, 1, Q prime at ordered pair 2, 1, R prime at ordered pair 1, 2.What is the scale factor of dilation? 1 over 2 1 over 3 1 over 4 1 over 5