All but one describes a function of apoptosis. that is a) cell death that occurs when cells are exposed to toxins or are injured. b) maintain a balance with in the immune system by getting rid of spent immune cells. c) cells undergo cellular suicide when they receive certain cues indicating that the cell is damaged. d) occurs during embryological development to make sure that extra body tissues are not present wants embryo has developed.

The right answer is A.

Apoptosis is cell suicide, or programmed cell death (according to an established genetic program). the opposite of necrosis which is a cell death due to a toxin.

Thus, it is the apoptosis that kills the cells between the fingers during the embryonic development, to allow to dissociate them. The same phenomenon makes the caudal appendage disappear.

Apoptosis is also involved in the elimination of incompetent or useless immune cells.

Apoptosis is also used to eliminate cells that have irreparable damage to DNA (damaged telomeres), to prevent the development of cancer.

answer;

a. sheep consumption efficiency would be reduced.

explanation;

-trophic efficiency is a measure of how much energy occurs at one level divided by the energy at the level immediately below it . trophic efficiency incorporates three types of efficiency:

-the proportion of available energy that is consumed (consumption efficiency).   it is the proportion of the available biomass that is ingested by consumers.

-the proportion of ingested food that is assimilated (assimilation efficiency).

-the proportion of assimilated food that goes into new consumer biomass (production efficiency).

-in this case, the grasshoppers would affect sheep by reducing the proportion of the available biomass that is ingested by the sheep.