Which is the correct definition of toxicology? ОА the study of the adverse effects of some foods on household pets
OB. the study of the adverse effects of some plants on farm animals
Oc. the study of the adverse effects of some chemicals on organisms
OD. the study of the adverse effects of some medicines on animals

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste. the percentage of food that the united states wastes each year is %.