Which type of environmental scientist is likely to study the effects of pesticides on pigs?
a. ecologist
b. oceanographer
c. environmental veterinarian
d. environmental physician

Possibly A. Ecology would consist of how nature interacts; food cycle, energy cycle, ecological interaction, ETC. However how this would be relative towards ecological matters is due to how both interact. It's Parasite to Host. Which would mean it's parasitism; which would consist of something having a dependence of another organism. Parasitism is a form of ecology, because it describes the relationship towards organisms. 

More; less is the correct answer

True statement gravity force is more on bigger mass, less on smaller mass.all mass fall on planet with same acceleration and speeds