-Salicylic acid is a naturally occurring chemical produced in willow trees. Salicylic acid is used by humans in some acne products to kill bacteria that
cause skin irritation
Based on this information, what stimulus most likely causes willow trees to
increase the production of salicylic acid?
Freezing conditions that damages leaves
Changing seasons with less direct sunlight
Damage to the bark of the tree trunk
Exposure to pathogens in the vascular tissue

answer; i believe the correct answer is (sporophyte);

ever get the answers? im stuck on this as well

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.