In any ecosystem, blank are the point for energy for new energy.

a) consumers

b) detritivores

c) heterotrophs

d) producers

Which of the following are not matched correctly? cd8+: directly destroy infected or cancerous cells t reg cell: reduce the adaptive response once threat passes t l: activate cellular branch (cytotoxic t cells, macrophages, nk cells) t 2: stimulate b cells to make antibodies t (cd4+): mhc i