check my answers?

1) What has the largest negative impact on biodiversity?(1 point)

A ) severe weather

B ) increased predation

C ) the introduction of new species

D ) building over habitats **

2) Climate change affects the ocean by(1 point)

A ) decreasing biodiversity. ***

B ) increasing coral reef formation.

C ) increasing biodiversity.

D) decreasing acidification of the water.

3) A decrease in food resources can decrease(1 point)

A ) pollution

B ) water resources

C ) habitat size. **

D ) biodiversity

4) The establishment of a bird reservation is a way to(1 point)

A ) attract predators.

B. ) decrease biodiversity.

C ) increase funds.

D) preserve an ecosystem. ***

5) A healthy ecosystem includes(1 point)

A ) a population of a few organisms.

B ) biodiversity. ***

C ) only a community of animals.

D ) only a community of plants.