Answer:
A and D I think
Explanation:
It's not erosion, so that is out of the answer choices. And I doubt it is crystallization, so that is why I think it is A and D. (correct me if I am wrong.)
Answer:
You are viewing an egg cell
It effects the environment because it can cause unstability in the food web and biotic and abiotic factors
Scientists and biologists study the world using experimentation. This can be done through observation, or by performing scientific tests in a lab.