Answer:
Nitrogen fixation is a process whereby bacteria in the soil convert atmospheric nitrogen ( N2 gas) into a form that plants can use. ... Animals get their nitrogen by eating plants or other animals. Finally, all organisms need a steady supply of nitrogen because it is a building block of DNA and RNA, and of proteins.
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DNA replication needs to occur because existing cells divide to produce new cells. ... So the DNA needs to be copied before cell division so that each new cell receives a full set of instructions!
The genome of the different cell changes. In other words, the cell can turn on or off certain genes, or the gene expression.
Answer:
false, plants and animals perform cellular respiration but only plants can photosynethesize.
Explanation:
