A) Many carnivorous plants are found only in environments where soils are poor in nutrients.
B) Carnivorous plants like Venus flytraps occasionally consume relatively large animals, including frogs and slugs.
C) Carnivorous plants typically have very extensive root systems.
D) Many pitcher plants have an internal layer of flaky wax that assists in prey capture.

A) By adding noncarnivorous competitor species
B) By weeding and clipping noncarnivorous competitor species
C) By adding ants
D) By removing ants

A) The species that was restricted to acidic soils excluded the species that was adapted to calcareous soils when grown on acidic soils.
B) The species that grew on calcareous soils was physiologically incapable of growing on acidic soils.
C) The species that grew on acidic soils was physiologically incapable of growing on calcareous soils.
D) The two species did not compete with each other when grown together.