Answer:
Cetacea it's the correct answer!
I think C because if the shell was the same for every tortise it wouldnfit there environment
<span>Answer: 16 combinations
A fruit fly has four pairs of chromosomes in its cells. Assuming all pair is heterozygotes, each pair of the chromosome can be divided into two possible combinations. So, if there are 4 pairs then the possible combination would be 2 * 2 * 2 * 2= 16 possible combinations.</span>
Answer: The carbon that plants need for photosynthesis comes from carbon dioxide, or CO2 that's present in our atmosphere.
Explanation: Carbon dioxide is released into the air by organisms, such as animals that undergo cellular respiration. In other words, we breathe out CO2 as a waste product.