In areas where animals are protected by law, such as wildlife preserves, any type of hunting is __________.

Many factories __________ toxic gases, like carbon dioxide and methane, into the atmosphere.

The balance of a(n) __________ can be disturbed due to the introduction of new species.

Lucas: “I'm sorry I couldn't pick up your call.”

Cathy: “__________”

Changes in the earth's __________ might cause animal and plant life to diversify.

Many people live in urban areas where the average level of sulphur dioxide pollution __________ their lives.

Leaders across the globe have __________ action to protect endangered animals and plants.