B. some species die out when environmental changes occur
<span>Gene Expression is the progression wherein the
information from a gene is used in the combination of a functional gene
product. In eukaryotic cells, genes are delimited by repressors as well as by transcriptional
activators. The repressors will muddle to the specific DNA sequences and will constrain
transcription.</span>
Humans ferment lactic acid in muscles where oxygen becomes depleted, which is why sometimes if you finish a run and don't stretch soon you have have discomfort. <span />
C- are derived from fruits and vegetable
They are the only cells with chloroplast
