Exam Guidelines Exam Instructions
Question 2 of 20:
Select the best answer for the question.
2. Which process refers to the separation of Earth into the core, mantle, and crust?
O A. Differentiation
O B. Abiogenesis
O C. Cambrian explosion
O D. Photosynthesis
Mark for review (Will be highlighted on the review page)

answer: after carbon dioxide enters the leaf through stomata it moves into the mesophyll cells where photosynthesis occurs and glucose is constructed. respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy.

explanation:

nucleus

would be most reasonable answer tbh

d. organisms have cells with different shapes and functions.