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damaskus [11]
3 years ago
10

Which of the following is an example of a keystone species? (select all that 2 points

Biology
1 answer:
ICE Princess25 [194]3 years ago
8 0
Busttguhhksksnskeksnsjsns
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Why do cells need to replicate their DNA?
Vesnalui [34]

Answer:

Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell. ... Once the DNA in a cell is replicated, the cell can divide into two cells, each of which has an identical copy of the original DNA.

Explanation:

6 0
2 years ago
genetics and the environment both play roles in cell differentiation. which is the best example of an environmental factor influ
In-s [12.5K]

Answer: etiolation of plant growth in shade, with fast growing cell without chloroplasts. Out of shade, cell differentiate again to produce photosynthesising cells

Explanation: It is a subjective decision as to what is ‘best’. Good examples are plant responses to changes in the nutrient supply.

when soil nitrogen is depleted some plants, such as legumes, grow nodules on their roots, with cells that release chemical signals to attract nitogen fixing bacteria.

Lack of light induces etiolation in many plants. New cells elongate and develop without chloroplasts, with rapid cell division exhibiting gravitropism, extending upward. When they grow beyond the shade area, cell differentiation changes again, to produce photosynthesising cells.

7 0
3 years ago
How has this continued petroleum extraction from selected areas over time likely affected petroleum resources on Earth?
garri49 [273]

Answer:Petroleum, also called crude oil, is a fossil fuel. Like coal and natural gas, petroleum was formed from the remains of ancient marine organisms, such as plants, algae, and bacteria. Over millions of years of intense heat and pressure, these organic remains (fossils) transformed into carbon-rich substances we rely on as raw materials for fuel and a wide variety of products.

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5 0
3 years ago
Which one of these regulates biological safety in the workplace?
Lisa [10]

Answer:

The answer is:

NIH

3 0
3 years ago
Which of the following is most likely to occur when excess fertilizer make their way into the waterways through run off
Usimov [2.4K]

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Eutrophication

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When a body water lies in close proximity to any agricultural land, there are high chance of it receiving nutrient from the surrounding land in rainy season. The rich nutrient run off from these land parcels, mixes with the water of existing water body and make it extremely rich in growth nutrients. The excess of nutrients causes uninterrupted growth of algae and lead to algal boom. Oxygen in such water bodies depletes at a fast rate due to the increased productivity thereby harming the water animals living in it.

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3 years ago
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