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.
Answer: Racial classification
Explanation: Racial classification can be defined as the way humans are classified based on their physical and social traits which they have such as how they look, their skin color, hair texture, the native languages they speak.
Scientists used racial classification to learn how unique and different humans are.
Xylem and Phloem are the conducting elements of vascular plants.They function in the transport of water nutrients,sugar,proteins,and RNA throughout the plant
Answer:
There would be more Sea Urchins
Explanation:
There would be more Sea Urchins because there would be nothing hunting them. Causing their population to increase.
