Bison are herbivores that graze on big bluestem grasses in grassland/prairie ecosystems. bison be an example of a producer, primary consumer, secondary consumer, or tertiary consumer?
Explain your answer.

4.06 hc)a five-year review of threats to the southern resident orca population of the united states concluded that the top threats were prey availability, contaminants, and effects from recreational and whale watching vessels. further down the list are oil spills, disease, and effects from commercial vessels not targeting whales. how might this list be different if it were for transient whale populations, which have a larger average population size and live farther offshore in open waters? a)the transient population is more likely to be affected by contaminants. b)the transient population is less likely to be affected by whale watching vessels. c)the transient population is more likely to be affected by disease. d)the transient population is less likely to be affected by prey availability.

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a