Answer:
C. natural selection
Explanation:
I hope this helped :)
Answer:
C
Explanation:
Which of the following images shows a transition from biosphere to the
atmosphere?
Answer:
I believe it is B
Explanation:
The biosphere is where life is, which has trees. The smoke from the trees is going into the atmosphere.
In toxicity testing, the dose of a chemical above which there is a measurable decline in the health of the organism being tested is referred to as
In toxicity testing, the dose of a chemical above which there is a measurable decline in the health of the organism being tested is referred to as the toxicity threshold.
A level of the dose above which the toxic effects of the dose can be observed in an organism is known as the toxicity threshold.
Below the threshold dose, no toxic effects are observed. Toxicity testing, also referred to as safety testing or toxicity analysis, is the study of the extent to which an interested substance adversely affects an organism’s normal functions, based on exposure time, exposure route, and concentration of the substance.
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The circle graph below shows the percentage of water which are used for various activities in the United States which statement about the use of water in the untied states is false
Answer:
The answer is A. industrial use of water is greater than the amount used to cool power plants.
Explanation:
it just is
If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria
It is true that If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria.
Both the color and the turbidity of LAL are used to identify endotoxins. The mixture turns yellow when the kinetic chromogenic LAL reagent reacts with endotoxins. By looking for pyrogenic responses in horseshoe crab blood cells, this identifies the presence of bacterial endotoxins. The outer membrane of Gram-negative bacteria contains endotoxins. In order to ensure product safety and quality in the medical and pharmaceutical industries, their detection is essential. Gram-negative bacteria's outer membrane and cell wall are primarily made up of endotoxins.
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(complete question)
If LaL turns into a gel when exposed to a sample, it means the sample is contaminated with gram-negative bacteria.
true or false.
What happens during the reduction?
Common reduction techniques result in oxygen loss. For instance, the reduction reaction process is used to decrease ore.
To obtain metals, build electrochemical cells and transform ammonia into nitric acid. Redox reactions, or reduction-oxidation processes, are the simultaneous reduction and oxidation of chemical substances. Oxidized species lose electrons, whereas reduced species gain them. Even without oxygen present, oxidation can still take place. Oxygen has the chemical symbol O and an atomic number of 8. It belongs to the periodic table's chalcogen group and is a very reactive nonmetal.
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An ecosystem is represented below.
Key
A lege eeee eeee eeee eeee u sees
= Ocean surface
eeee
= Algae and
seaweed
co
जीनि
= Fish
= Mud and
sediments
The organisms represented as feet are found in the area shown due to which factor?
pH
B. sediment
C. light intensity
D. colder temperature
Answer:
C. Light intensity
Explanation:
they need light to grow so they stay near the ocean surface because that's where the most light is
Biodiversity Assignment
Answer:
what is the assignment on
have a good day :)
Explanation:
Answer:
What's the main question of the assignment.
Which is an example of a recent development used to address food shortages in urban areas?
Answer:
A is answer
Explanation:
A recent development to address food shortages in urban areas is to create community gardens. The city usually sets aside a space for people to grow their own food.
Answer:
Its b.
Explanation:
If you know the answer to this question please help! 7th grade
scientists may make many genetically identical copies of an organism called _____
A. plasmids
B. hybrids
C. clones
D. mutants
Answer:
C. Clones
Explanation:
Clone definition: An organism or cell, or group of organisms or cells, produced asexually from one ancestor or stock, to which they are genetically identical.
Hope this helps! :3
An important regulator of electrolyte concentrations in extracellular fluids is .
Answer:
Mineralocorticoid
Explanation:
Answer:
Aldosterone
Explanation:
Hope this helps!
Please mark me as Brainlinieast.
Categorize all the components involved in photosynthesis as either matter or energy!
In photosynthesis, matter components are chlorophyll, water, carbon dioxide and glucose. Energy components are light energy, chemical energy, thermal energy.
Matter:Chlorophyll: a pigment found in the chloroplasts that absorbs light energy
Water: a molecule that is oxidized during the light-dependent reactions
Carbon dioxide: a molecule that is used as a source of carbon for the synthesis of organic compounds
Glucose: a simple sugar produced as a result of the light-independent reactions.
Energy:Light energy: energy from the sun that is absorbed by the chlorophyll to drive the reactions of photosynthesis
Chemical energy: energy stored in the bonds of glucose and other organic compounds produced during photosynthesis
Thermal energy: energy in the form of heat that is released as a byproduct of the reactions of photosynthesis.
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need help asap
question 9
- 20 points
When you don't consume enough protein, your body will start using your muscles and organs as a source of protein. T/F
It is true when you don't consume enough protein, your body will start using your muscles and organs as a source of protein.
A structure composed of amino acids. The body need proteins to function properly. They serve as the building blocks for several bodily components, including the skin, hair, and enzymes, cytokines, and antibodies.
A severe protein deficiency can hinder children's growth, contribute to fatty liver and skin, induce edema, and worsen infections. True deficiency is uncommon in affluent nations, although a low intake can lead to muscular atrophy and an increased risk of fractures.
Additionally, a lack of protein over time might cause you to lose muscle mass, which will reduce your strength, make it more difficult for you to maintain your balance, and slow down your metabolism.
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Please help!! Need answers asap : )
Answer:
D
Explanation:
why does a frog have a dual mode of breathing? HOTS
Both ferns and cender trees rely on .............. To successfully fertilize themselves
Answer:
Explanation:
Both ferns and cedar trees rely on wind-dispersed pollen to successfully fertilize themselves.
Ferns are a group of vascular plants that reproduce via spores. These spores are produced in clusters called sori, which are found on the underside of fern fronds. The spores are released from the sori, and are carried away by the wind to fertilize other ferns.
Cedar trees, which are coniferous trees, also rely on wind to disperse their pollen. The male and female cones of the tree are separate, with the male cones releasing pollen into the air which is carried by the wind to fertilize the female cones on the same or nearby trees.
Both ferns and cedar tree do not produce flowers or rely on animal vectors (like bees or butterflies) for pollen transport, they use the wind to move their reproductive cells and complete the fertilization process.
What is a non-renewable resource?
A. A resource that has already been used up
B. A resource that is infinitely abundant
C. A resource generated at a rate that is much faster than it is used
D. A resource generated at a rate that is much slower than it is used
Answer:
a
Explanation:
Answer: D
Explanation: resources are called non-renewable not because they have been completely used up or will never replenish but because they take a long time ie about thousands or millions of years to replenish.
The healthcare provider prescribes 375 mg of intravenous (iv) ampicillin iv every 6 hours for a 5-month-old with a recurrent respiratory infection. The drug is supplied as 500 mg of powder in a vial. The directions state that the powder should be mixed with 1. 8 ml of diluent, which yields 250 mg/ml. How many milliliters should the nurse administer? take your answer to one decimal place. ___ ml
The nurse should administer 1.5 mg of ampicillin IV to the 5-month-old patient with a recurrent respiratory infection.
Respiratory infection is the infection of the respiratory system, especially of the respiratory pathways like the nose, throat, bronchi, etc. They usually are mild in nature which can be relieved on their own, However some diseases can cause severe effects. The examples are cold, common flu, COVID-19, etc.
The amount of ampicillin can be calculated by using the Desired over Have formula, that can be expressed as:
Dose ordered / Dose Have = Amount needed to be given.
Therefore 375 / 250 = 1.5 mg
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Select the best answer for the question
20. A specific aphid is known to infest spinach, peppers, and tomatoes. How could a farmer use biological control to reduce aphids on these crops?
O A. Apply neem oil to the crops
O B. Introduce ladybugs to eat the aphids
O C. Introduce honeybees to pollinate the crops
D. Only plant crops that produce the Bt toxin
Answer:
O B. Introduce ladybugs to eat the aphids
Explanation:
In crop production, there are certain pests known to categorically affect a particular crop plant. Hence, there are ways devised to tackle this issue of pest attack on crops. One of those ways is the "BIOLOGICAL CONTROL METHOD".
The biological control method involves the use of natural enemies to combat pest organisms. The natural enemies are living organisms that prey on the so called pest organism. This is the case in this question, where a specific aphid is known to infest spinach, peppers, and tomatoes.
The farmer will employ biological control method in stopping these aphids by introducing ladybugs to eat the aphids.
Why do you think a composer would want to alter or highlight a rhythm or a tone?
Answer: A composer may want to alter or highlight a rhythm or a tone to create a desired effect or mood. By emphasizing certain rhythms or tones, a composer can create a sense of urgency, tension, or excitement. Additionally, by altering the rhythm or tone, a composer can add texture or depth to a piece of music, making it more interesting and unique.
what enzyme can proof-read the dna molecule, minimizing the mistakes made during the process of dna replication?
DNA polymerase enzyme can proofread the DNA molecule, minimizing the mistakes made during the process of DNA replication.
Fortunately, cells have developed extremely complex mechanisms to correct most but not all of those errors. Some of the errors are fixed during replication in a step known as proofreading, while others are fixed in a step known as mismatch repair after replication. Replication is halted when an erroneous nucleotide is added to the developing strand because it has an exposed 3′-OH group that is in the incorrect location. DNA polymerase enzymes notice this during proofreading and swap out the wrongly inserted nucleotide to allow replication to proceed. About 99 percent of total corrections can be corrected through proofreading, but that is still insufficient for healthy cell activity.
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Give three ways the human body would change if all cells in the human body were the same.
Which substance is NOT a known carcinogen?
a) latex
b) tobacco products
c) radiation
d) sunlight
Carcinogens are the agents that cause cancer in an organism and can be man-made or natural. Latex is not a type of carcinogen. Thus, option a is correct.
What are carcinogens?Carcinogens are the substances that can be a chemical or a biological compound that are capable of causing cancers. They can be natural agents like UV rays from sun, solar radiations, or viruses or can be a man-made substance like tobacco, nicotine, fumes.
These substances are capable of causing genetic mutations by altering the genomic sequence and the nitrogenous base that affects the genotype and the phenotype. The carcinogens leads to growth of abnormal and cancerous cells. Latex is a secondary metabolite that doe not causes cancer.
Therefore, option a. latex is not a carcinogenic agent.
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Which of the following is a true statement regarding photoreceptors? Check all that apply a. Rods are responsible for night vision. b. Rods are associated with photopic vision. c. Cones are associated with color vision. d. There are more cones than rods e. Cones function in brighter light.
the following is a true statement regarding photoreceptors is Rods are responsible for night vision.
What are the two types of photoreceptors?Two types of photoreceptors reside in the retina: cones and rods. The cones are responsible for daytime vision, while the rods respond under dark conditions. The cones come in three varieties: L, M, and S types.
What do rod photoreceptors detect?Photoreceptors in the retina are classified into two groups, named after their physical morphologies. Rod cells are highly sensitive to light and function in nightvision, whereas cone cells are capable of detecting a wide spectrum of light photons and are responsible for colour vision.
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The true statement about photoreceptors is-"Rods are responsible for night vision".
What are the four photoreceptors present in the eyes?There are four photoreceptor types in the human retina- Short-wavelength cones (blue), medium-wavelength cones (green), long-wavelength cones (red) and rods.
What is the main function of photoreceptors?Photoreceptors are specialized neurons found in the retina that convert light into electrical signals that stimulate physiological processes. Signals from the photoreceptors are sent through the optic nerve to the brain for processing.
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Why does a single X chromosome that carriers the allele for red-green colorblindness cause males to be color blind but doesn’t cause females to be color blind
In the diagram, which organism is a producer?
all of these answer
dandelion
wheat
clover
Answer:
since it says producer im thinking maybe wheat because you can eat wheat, it has to be wheat
Explanation:
In two or more complete sentences, describe an activity you perform that has an impact on climate change? Is it positive or negative? Can it be adjusted to improve our climate? Justify your answers in two or more complete sentences. Write your answer in the essay box below.
Answer:
Burning of woods has a negative impact on the climate.
Explanation:
Burning of woods for heating has a negative impact on our climate because it releases carbondioxide gas which is a greenhouse gas that trapped the reflected solar radiation and leads to global warming. We have to used alternative methods for heating such as electric heater instead of burning of wood which produce no pollution and can fulfill the requirement of heating so from the above discussion we can say that the activity has a negative impact on the environment.
How does carbon dioxide affect whales?
Whales accumulate carbon in their bodies during their long lifespans. When they die, they sink to the bottom of the ocean. Each large whale binds an average of 33 tons of carbon dioxide and removes this carbon from the atmosphere over centuries. Trees, on the other hand, only absorb up to 48 pounds of CO2 per year.
Rapid global warming has led to habitat loss for whales and dolphins, increasing competition for fewer and fewer prey species. It affects the timing and extent of migration, distribution and even fertility.
Scientists call large whales "ecosystem engineers." Research shows that whales cycle nutrients in the oceans, help produce the oxygen we breathe, and play an important role in mitigating greenhouse gases. Whales are not only amazing, they are breathtaking.
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Recreate the sequence that occurs in the carbon cycle beginning with carbon dioxide gas.
Our atmosphere also contains it as carbon dioxide, or CO2. Calcium, magnesium, potassium, or sodium ions are released as the acid dissolves the rocks, a process known as chemical weathering.
What carbon cycle beginning with carbon dioxide gas?As carbon dioxide, or CO2, it is also present in our atmosphere. Rain starts the transfer of carbon from the atmosphere to the rocks, or lithosphere. Rain is a result of the weak acid, carbonic acid, which is created when atmospheric carbon and water interact.
Therefore, When animals perish, volcanoes erupt, fires burn, fossil fuels are consumed, among other processes, carbon is released back into the atmosphere.
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