Answer:
During the Cambrian explosion approximately 535 to 525 million years ago, 2. animals rapidly diversified in the oceans
Explanation:
Scientists have the theory that the Cambiran explosion, approximately 535 to 525 million years ago, <em>was possible because of complex predator-prey relationships and increased atmospheric oxygen levels.</em> All this situation promoted animal diversification. Thinking about evolution, animals directly evolved from protists.
Answer:
I think its C but let me know if I am wrong.
Open and close to control evaporation