Cell specialization is important because
-it is required for cells to perform as part of a living thing
-different cells need to do different things
Most likely it's B. The fossil record provides samples of every organism that ever lived.
The answer is A. Whales use blowholes for breathing.
It might be c, but I cant find any information in it, and b and d are characteristics of fish.
Good Luck!
Answer:
The answer is B.
Explanation:
The reason for this is because, they're arms, fins, and wings all have the same finger bones which lead to a/an common ancestor.
The carbon core that is left behind is called a white dwarf