EV NATURE

Baby animals:

• kitten

• puppy

• lamb

• cockroach

What is it?

What is it?

A place where bats live.

Low land between mountains.

____________ is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). Over the past few decades, humans have released so many different chemicals into the air that they have changed the mix of gases in the atmosphere.

air ________

car exhaust ________

Scientists believe that human activities are increasing the __________________. When people drive a car or operate a factory they burn coal, oil, and other fossil fuels. This has led to global warming, or a steady rise in the average temperature of Earth’s surface.

Recap the disadvantages of the greenhouse effect.