Aquifers are

a. structures used to transport water from city to city

b. created through evapotranspiration

c. densely packed snow close to becoming glaciers

d.
layers of porous rock or sand

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.

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

Which statement best describes the role of religion and culture in ancient medicine?