Pyruvate undergoes fermentation if no oxygen is present. This is called anaerobic reaction. Can undergo lactic acid or alcoholic fermentation.
No, the continents are much younger because new crust forms there. No, the ocean floor is much younger because new crust forms there. Yes, both the ocean floor and continents are constantly forming new crust. Yes, both the ocean floor and continents were formed at the <em>same time</em>.
Good job eliminating option D. Option A is reversed Mitosis occurs in somatic cells and Meiosis in germ cells. Crossing over results in genetic diversity or a change in DNA, that would happen in reproduction and thus meiosis. Option A, B, and D are not the answer. <u>Option C is correct.</u>
The correct answer is C
Hope this helped :)
