Which describes the light-dependent stage of photosynthesis?
(select all that apply.)

a. photosynthetic pigments absorb energy from light.

b. carbon dioxide is incorporated into a preexisting sugar molecule.

c. water is split, which produces oxygen.

d. hydrogen ions (h+) are moved against their concentration gradient.

__1__ is a climate cycle where the temperature of the __2__ ocean changes because of movements of air and ocean currents. during this period, the trade winds in the south __3__ , causing the __4__ water to move from the __5__ region to the __6__ region. 1) el nino or the monsoon 2) atlantic, indian, or pacific 3) reverse, strengthen, or weaken 4) cold or warm 5) eastern or western 6) eastern or western

What is the relationship between absorbance of light and the rate of photosynthesis?

Elephants in the savanna regions of africa dig holes in dried up river beds to reach water lying just below the surface. these holes provide drinking water for other animals as well. so, without the elephants, many animals might otherwise die from lack of water during the dry season. the location in which the elephants live is an example of a/n and the role they play in creating water holes is an example of a a) ecosystem; habitat b) community; niche c) habitat; niche d) niche; habitat