Explanation:
Given the importance of oxygen for animals, researchers suspected that a sudden increase in the gas to near-modern levels in the ocean could have spurred the Cambrian explosion. ... This supported the idea of oxygen as a key trigger for the evolutionary explosion.
Answer: Body waves travel through earths interior while surface waves travel along the earths surface. Body waves travel more rapidly than surface waves.
Explanation:
Human cells as well as plant and animal cells
