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rosijanka [135]
3 years ago
8

When one kind of plant grows in soil, it uses up certain nutrients. Other kinds of plants use up other types of nutrients.

Biology
1 answer:
vazorg [7]3 years ago
4 0

Answer:

4

Explanation:

Especially leguminous crops so that bacteria in the root modules can replenish the soil nutrients by their nutrifying activities

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The human population is now about
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7 billion and counting

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Cactus (3) Producer

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A scientist investigated DNA replication in two groups of cells, labeled A and B. She injected radioactively labeled nucleotides
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Answer:

D. The cells in group B are prokaryotic because they replicate their DNA in the cytoplasm.

Explanation:

The cells of group A are prokaryotic because it is prokaryotes which do not have a double membranous structure called nucleus for storing their genetic material. The genetic material of prokaryotes is spread in the cytoplasm in the form of a circular DNA which is called as nucleoid. Since they do not have a separate organelle like nucleus for storage of their genetic material, they are bound to replicate their DNA in the cytoplasm. In contrast to prokaryotes, eukaryotes have nucleus for storage of their genetic material and in eukaryotes replication is an exclusively nuclear event.

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Producers are the energy generators. They are the biggest source of energy for other levels. Consumers feed on producers and other animals. And the end, when consumers die, decomposers feed on them, break down their bodies and mix it with soil increase its fertility and the cycle of energy flow goes on.


5 0
3 years ago
Read 2 more answers
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