Answer:
Melting mountain glaciers
Explanation:
This is the answer because some of our fresh water is in ice caps/glaciers so we will loose fresh water and we will not have fresh water to drink so the planet earth will not have water.
From experiments that scientists did with bacteria and viruses
Somewhat met in the nature
Answer:
The robins build a nest to protect their young from predators and the egg falling out of the nest. Robins wil take care of their young by feeding them until they’re old enough to survive on their own and fly from the nest. The baby birds usually stay in the nest but do fall if the nest is built in an unsafe enviroment.
Explanation: