Answer: As each cell differentiates, the <em>DNA </em>changes so that each type of cell has different <em>DNA</em> once it reaches maturity. Mutations in the cells’ nuclei lead to new combinations of <em>DNA</em>, resulting in different shapes and functions in the different types of cells.
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Answer:
photosynthesis produce food for plants
Answer:
D. They used simple molecules from early times and put them in a simulation from that time and it made complex ones that we have now.
Actually, we have 4 incisors,1 canine on each side, 2 premolars on each side and 3 molars on each side. The most logical answer would be b.
