The precambrian time period is segmented into very few parts because: . a.. the fossil record is scarce. b.. life did not exist. c.. cyanobacteria were the only life form. d.. volcanic activity ruined the fossil record.

Which of the following statements about c4 carbon fixation is not true? a c4 carbon fixation is an adaptation for plants exposed to high light intensityb. c4 carbon fixation occurs in more plants than c3 carbon fixation. c c4 carbon fixation is more common in areas of high temperatures than c3 carbon fixation. d. c4 carbon fixation occurs in the inner cells of a leaf rather than the entire leaf.

Does mitochondria still meet the definition of a eukaryote why or why not?

What if the yeast were extremely active and produced more than 100ml gas. would you know? why/why not