Which of the answer choices is an advantage of having two slightly different photosystems in the chloroplasts? a) cells are able to use light energy at twice the maximum efficiency predicted for cells with a single photosystem. b) the electrons can be elevated to a higher energy level than is possible with a single photosystem. c) twice as many electrons can be excited by a given amount of light energy. d) cells are able to use both blue and green wavelengths of light for photosynthesis.

The answer is B.

Explanation:

To capture light energy energy from photons (from light) should be passed to excite and pump an electron. Main issue is single photon doesn't contain enough energy pump the electron in one step. As a result they use two different photosystems to elevate the electrons into higher energy levels using two photons (see figure). After that excited electron passed to the primary electron acceptor, This electron acceptor passes the electron via electron transport chain to convert NADP+ into NADPH to store electrons' energy.

the answer you're looking for is OVERPOPULATION. Overpopulation is when the carrying capacity of the land is exceeded. I hope this answer helps u out on your test and have a great day.