Please help with this it is carbon cycle

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.

How can antibodies "remember" a particular bacterial invader or "antigen" on that invader?

Is a measure of the different types of organisms in a community. question options: tertiary secondary primary none of the above