B because the temperature goes up then the birds would move to the south were it is cooler.
Answer:
one end has a free phosphate group on the 5' carbon; the other end has a free hydroxyl group bonded to the 3' carbon.
The answer is letter C <span>) surface area to volume ratio
As a cell grows, its volume increases faster than its surface area, therefore, a cell must either stop growing or divide to replace old and or damaged cells.
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The sclerenchyma is the tissue in which creates the plant firm and hard. The two kinds of sclerenchyma cells exist fibers and sclereids. Their cell walls be made up of cellulose, hemicellulose and lignin. The sclerenchyma cells are the principal associate cells in plant tissues that have come to a close elongation.