Which of the following best describes speciation that occurs suddenly following a period of no change.

Which of the following biomes has permafrost; small mammals; cold temperatures?

Which of the following best describes bees who sacrifice reproductive success in order to serve the queen bee.

Which of the following does not cycle in an ecosystem?

Which of the following biomes has moderate rainfall; very fertile soil?

Most likely, the greatest threat to biodiversity is

The seasonal changes on Earth are due to

All are examples of prey adaptations except

A cow’s herbivorous diet indicates that it is a(n)

Which of the following biomes has extremely short growing season; precipitation mostly snow; no trees ?