Choose the correct answer

Ice is a ____.
1. solid
2. liquid
How does the situation ____ you?
1. effect
2. affect
It's all very ____; you never know what's going to happen.
1. predictable
2. unpredictable
My brother studies ____.
1. the environment
2. an environmentalist
Global warming is caused by ____.
1. people
2. human activity
Eat your ice cream quickly - ____.
1. it's spreading
2. melting
Water is a ____.
1. liquid
2. gas
The rainforest is gradually .
1. disappearing
2. melting
There are harmful gases in the ____.
1. atmosphere
2. effect