Answer: Primary succession occurs in an environment without previous life, or a barren habitat. Secondary succession occurs in an area that had previously been inhabited but experienced a disturbance, such as a wildfire. The newly created volcanic island has no previous life, and is made of rock, devoid of soil.
Explanation:
A student conducted an experiment to test whether talking to plants would help them to grow faster. he set up the following two groups: group 1: spoken to and hand watered group 2: not spoken to and watered with sprinklers after three weeks, the plants in group 1 showed much more growth than those in group 2. based on the results of this experiment, which is the best conclusion? they are valid because the student ran a controlled experiment. they are not valid because the student did not control all the variables that can affect plant growth. they are valid because the dependent variable caused a change in the independent variable. they are not valid because the time frame to grow a plant is too short.
From the results in the experiment the best conclusion is : ( B ) they are not valid because the student did not control all the variables that can affect plant growth
Experimental varablesThe growth variables such as amount of light and amount of water need for the plants to grow effectively are not controlled in the experiment. The first group was hand watered while the second group was watered with a sprinkler therfore the amount of water reaching both groups are not the same therefore the experimental conclusion is not valid.
Hence we can conclude that From the results in the experiment the best conclusion is : ( B ) they are not valid because the student did not control all the variables that can affect plant growth.
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Answer:
B on edge
Explanation:
Sort these terminal electron acceptors as participating in either aerobic or anaerobic respiration.
The main electron acceptor in aerobic respiration is oxygen; while some electron acceptors in anaerobic respiration are sulfur and nitrate.
What is the difference between aerobic and anaerobic respiration?Respiration is a biological process that involves the production of energy. This can occurs with oxygen (aerobic) or without it (anaerobic).
What are the electron acceptors in each case?An electron acceptor is a molecule that can accept electrons, which is essential to produce energy.
Anaerobic acceptors: Sulfur, sulfate, nitrate.Aerobic acceptors: Oxygen.Learn more about oxygen in: https://brainly.com/question/2272415
What are sense organs?
Sense organs ~
Sense organs are the ones that responds to external stimulus, such as heat, light, chemicals, etc
For example :
Eyes are sense organs that responds to visual stimulus like change in light intensity.
Ears are sense organs that respond to sound stimulus, like Loud music, or change in intensity of sound.
Why is important to use the correct bacteria as a host when completing the plaque assay?.
Explanation:
It's important to use hard agar with soft agar overlay because The hard agar underneath the soft agar overlay is where you make a lawn streak of your bacteria.
It's important to use hard agar with soft agar overlay because The hard agar underneath the soft agar overlay is where you make a lawn streak of your bacteria.
What is plaque assay?
A trusted technique for determining viral concentration in relation to infectious dose is the plaque assay. In order to perform the test, a monolayer of virus-infected cells must be counted to determine how many plaque forming units (pfu) were generated.
When a virus-infected cell lyses, plaques form, which trigger a cycle of surrounding cell lysis and infection. Crystal violet staining of the preserved cell monolayer allows for the visualization of plaques.
The plaque assay was initially created as a virological assay to count and measure bacteriophage infectivity. Later, it was used to count viruses that infect mammals as well.
The technique's fundamental premise is to assess a single infectious virus' capacity to develop a "plaque" on a confluent monolayer culture of cells.
Therefore, It's important to use hard agar with soft agar overlay because The hard agar underneath the soft agar overlay is where you make a lawn streak of your bacteria.
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Calculate the sum of the decreases of the electric potential along the path, and the sum of the electric potential increases. State the relationship between the two
The sum of the decreases of the electric potential along the path will be 2.004V.
How to calculate the sum of the electric potential?From the complete information, the total current(I) is given as:
= 2/(4 + 3 + 5)
= 2/12
= 0.167A
V3 = I × 3
= 0.167 × 3
= 0.501V
V4 = I × 4
= 0.167 × 4
= 0.668V
V5 = I × 5
= 0.167 × 5
= 0.835V
Therefore, the sum of the decreases of the electric potential along the path will be:
= 0.501V + 0.668V + 0.835V
= 2.004V.
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The molecular motors of the _______ superfamily are the only ones known to operate in conjunction with actin filaments. With one exception, these molecular motors move toward the _____end of an actin filament.
Answer:
Myosin, plus
Explanation:
The molecular motors of the myosin superfamily are the only ones known to operate in conjunction with actin filaments. With one exception, these molecular motors move toward the plus end of an actin filament.
-Biscuit08
The pituitary gland is called the ""master gland. "" What other endocrine glands would have been affected by its malfunction?
The pituitary gland is the director gland of the endocrine system along with the hypothalamus its malfunction can affect thyroid gland, adrenal glands among others.
What is pituitary gland?It is one of the areas through which the orders to produce certain hormones are quickly transmitted when certain stimuli are detected in the environment.
Its malfunction can create hormonal deficiencies of the thyroid gland, adrenal glands among others that can affect the various normal functions of the body, such as growth, blood pressure or reproduction.
Therefore, we can conclude that the pituitary gland is the director gland of the endocrine system along with the hypothalamus its malfunction can affect thyroid gland, adrenal glands among others.
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Clouds are made up of water vapor
True
False
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identify the organelle where photosynthesis takes place
b
c
d
e
E.
Photosynthesis takes place in Chloroplasts
In plants, the process photosynthesis occurs in chloroplasts which contain the chlorophyll. The chloroplast is seen on the mesophyll of the leaves. So in the given figure, chloroplast is present in the part 'E'. The correct option is E.
What is photosynthesis?The process by which the autotrophs convert light energy into chemical energy which is later used to perform the cellular activities is defined as the photosynthesis. The chemical energy is stored in the form of sugars, which are produced from water and carbon-dioxide.
Photosynthesis generally takes place in the specialized structure called the chloroplasts which consist of chlorophyll. It is the chlorophyll which absorb light energy from the sun. The majority of chloroplasts is present in the leaves which absorbs sunlight for the photosynthesis to occur.
So chloroplast is found in all green plants and algae. They are called the food producers of plants. This cell organelle is not found in animal cells.
Thus the correct option is E.
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Why are beneficial nematodes considered beneficial to humans?.
Fear-inducing messages:
a.
often have the opposite of the desired effect.
b.
are generally ineffective.
c.
can increase persuasion.
d.
almost always have the desired effect.
Fear-inducing messages can increase persuasion. A fear request is a persuasive message that tries to provoke fear in order to divert behavior through the threat of upcoming danger or harm.
Are fear inducing messages effective?Fear messages that let the audience know they can achieve the urged behavior or that the behavior will have a positive result are more useful than fear request messages without word of recommended actions.
Thus, option "C" is correct, Fear-inducing messages can increase persuasion.
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What is the process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell?.
Answer: Meiosis is a process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell. Meiosis usually involves two distinct divisions, called meiosis I and meiosis II. By the end of meiosis II, the diploid cell becomes four haploid cells.
Explanation:
Savanna climates would be ideal for people who enjoy open plains rather than oceans or mountains, and who also favor a steady climate with a narrow, yearly precipitation range.
Answer:
This is true
Explanation:
Savannas have less precipitation and more warm, consistent weather.
biology is hard i really need help
Answer:
B
Explanation:
I took the test and got thsi question right
NEED HELP
Match the related items.
1.frontal lobe
2.medulla
3.thalamus
4.cerebellum
5.cerebrum
6.cerebral cortex
7.left hemisphere
neurons
electrical relay
voluntary muscles
right body
coordination
involuntary muscles
emotions/ visual/ thought
Matching the related items with their description
1. Frontal lobe : Voluntary muscles
2. Medulla : Involuntary muscles
3. Thalamus : Electrical relay
4. Cerebellum : coordination
5. Cerebrum : emotions/ visual/ thought
6. Cerebral cortex : Neurons
7. Left hemisphere : right body
Parts of the BrainThe Medulla is a stemlike structure which makes up the lower part of the brain. It connects the spinal cord to the brain and it is cone-shaped neuronal mass, it controls autonomc functions in the human body. The cerbral cortex is the outermist of the brain which controls the mental capability of a human.
Hence we can conclude that matching each item to its decription is listed above
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In the antral phase of follicle development, the follicles are stimulated by LH and _______ to grow tremendously.
Answer:
FSH
Explanation:
In the antral phase of follicle development, the follicles are stimulated by LH and FSH to grow tremendously.
How are viral diseases different from
other types of diseases ?
Answer:
Viral diseases require a vector so that they can spread from one person to another whereas other diseases can spread due to seasonal changes and other effects
Explanation:
An individual heterozygous for cystic fibrosis (i.e., no disease sign) ____________________. A. cannot have children with cystic fibrosis B. is a carrier of cystic fibrosis C. cannot reproduce D. has cystic fibrosis
Answer:
B is a carrier of cystic fibrosis
Explanation:
Since cystic fibrosis is a recessive disease the person must have a mutation in both copies of the CFTR gene in order to have the illness.
How does most nitrogen get released back into the atmosphere during the nitrogen cycle?
A. Assimilation
B. Ammonification
C. Denitrification
D. Nitrification
Answer:
C
Explanation:
During a process called denitrification, nitrogen in gas forms, like nitrous oxide, are being released. Denitrification occurs if the nitrate is used when bacteria in the soil performs respiration.
The average emission rates in the United States from burning coal are 13 lb/MWh (pounds per megawatt hour) of SO2 and 6 lb/MWh of NOx. (A pound is a unit of mass, and a megawatt hour is a unit of energy. ) Imagine that a scientist developed a new emission control device that can cut each of these emissions to 35% of the current output. If the device were installed, what would the average emission rates change to?
Answer:
The average emission of SO2 would be 4.55 lb/MWh, and the average emission of NOx would be 2.1 lb/MWh.
Explanation:
Answer:
With a NOx release speed of 2.1 lb/MWh, the run-of-the-mill SO2 spilling over rate would be 4.55 lb/MWh.
Explanation:
This is Plato answer but slightly paraphrased.
What’s the meaning of biology biological, and biologically means? Or are they all mean the same. If they do not mean the same then explain.
What layer of the blood vessel wall is composed of areolar connective tissue containing elastic and collagen fibers
Hey There! Hope you are having a GREAT day!
Your question was.... "What layer of the blood vessel wall is composed of areolar connective tissue containing elastic and collagen fibers"
Your answer is the Tunica intima, Because, The blood vessel's tough outer layer is made up of connective tissue, which permits it to withstand stresses occurring on the vessel wall. It also contains strong collagen fibers that help bind the blood vessel to surrounding tissues, providing stability to the vessel.
I really hope this helps! :)
PLEASE HELPP :)
THANK YOU!!
Vertebrates that are warm blooded, have feathers and reproduce by laying eggs would be classified as
A) amphibian B) bird C) fish D) reptile
Answer:
A bird :)
Explanation:
Birds are warm blooded, have feathers, and reproduce by laying eggs :)
Have an amazing day!!
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Which structure pumps out excess water and wastes in a paramecium.
Answer:
Contractile vacuole
Explanation:
Contractile vacuole pumps out excess water and wastes in a paramecium.
The structure that pumps out excess water and waste in a paramecium is called the contractile vacuole. The contractile vacuole is a specialized organelle that collects excess water and waste materials from the cell and then contracts and pumps them out of the cell through a pore in the cell membrane.
What is water's role?Paramecium is a single-celled organism that belongs to a group of organisms called protists. Like other cells, a paramecium must maintain a proper balance of water and solutes inside its cell to function properly. However, because paramecia live in freshwater environments that have a lower solute concentration than the cell, water tends to move into the cell by osmosis. If too much water enters the cell, it can cause the cell to burst, so the paramecium has developed specialized structures to help regulate the movement of water.
Hence, the structure that pumps out excess water and waste in a paramecium is called the contractile vacuole. The contractile vacuole is a specialized organelle that collects excess water and waste materials from the cell and then contracts and pumps them out of the cell through a pore in the cell membrane.
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Which of the following is not a consequence of fossil fuel use? a. increased concentrations of atmospheric carbon dioxide b. destruction of wildlife habitats c. leaching of waste into groundwater d. none of the above please select the best answer from the choices provided a b c d
Answer:
d.
none of the above
Explanation:
edge 2022
What do a mushroom, an amoeba, and a 6th grader have in common?.
Answer:
They are all composed of one or more cells.
Explanation:
Which of the following aids in the weathering and transportation of rocks?
A.
electricity
B.
sunlight
C.
ice
D.
all of these
Answer:
D
Explanation:
Since thes all could transport them.
One important adaptation that separated us from other animals in our evolutionary trajectory is _________.
We can confirm that one important adaptation that separated us from other animals in our evolutionary trajectory can be considered to be Bipedalism.
What is bipedalism?Bipedalism was the adaptation of early human ancestors to abandon movement on all fours and begin to walk up-right. This was a vastly important adaptation as it provided the early humans with freed hands, allowing for many other uses such as tools and social cues.
Therefore, we can confirm that one important adaptation that separated us from other animals in our evolutionary trajectory can be considered to be Bipedalism.
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Observe the image. How are humans affecting the environment? (2 points)
Helping the environment by burning fossil fuels that pollute the air and water.
Harming the environment by destroying habitats and reducing the amount of oxygen in the air.
Helping the environment by building more homes and factories where people can live and work.
Harming the environment by planting more trees to provide shelter for humans
Clear demonstration of deforestation, the cutting down of trees in large quantities.
So, answer is:
Harming the environment by destroying habitats and reducing the amount of oxygen in the air.
Hope this helps!
DO 7. Choose the best answer.
Answer: The answer is C: Plant more trees
Explanation: Trees absorb excess nutrients from the soil, preventing algae blooms in waterways. This simple act will reduce algae blooms and help the fish.