The beginning of the Cambrian Period is marked by the evolution of hard body parts such as calcium carbonate shells. ... These body parts fossilize more easily than soft tissues, and thus the fossil record becomes much more complete after their appearance.
OK the answer is B equals X squared
I think this is ether b. Trait or C. Allele, pretty sure it’s allele though. Good luck!
Answer:
smoking littering setting bonfires with gas
<span>The edge of a continent where the ocean water is shallow is called the continental shelf. T</span>he continental shelf is the area of seabed around a large landmass where the sea is relatively shallow compared to the open ocean.
