Which question cannot be answered by science? A).Why do rainbows appear after rain storms?
B).Which plants grow in the desert?
C).Why should endangered animals be protected?
D).What is the hardest element on Earth?

I'm going to go with c this may be wrong tho

cytokinesis is the splitting of a cell membrane to form 2 identical daughter cells. it's similar to mitosis as both cells have identical copies of dna and cytokinesis is a step in the mitotic cycle.

because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.