The blood's glucose level ordinarily remains relatively constant because of the activity of

Which statement best describes a keystone species? o a. it has littlelmenetic variation. it has an extremely high population. 0 b. 0 c. it remains unaffected by all environmental changes. od. it has a strong influence on the ecosystem. 0 e. it's the first species to populate a new ecosystem.

The fauces connects which of th following structures to the oropharynx

Individuals do not compete directly for resources, but are prey for the same predator