1.Complete the sentences. Use the present simple. (Zero conditional)
Example:
Not sleep/get tired
If you don't sleep,you get tired.
1)travel south/reach Antarctica
2)freeze water/turn into ice

2.Complete the sentences. Use will/won't and the verb in brackets.
1)If you eat healthy food,you(not be).... ill!
2)If the hole in the ozone layer gets bigger,the climate(be)....hotter.

1) If you travel south, you reach Antarctica.2) If you freeze water, it turns into ice.2.1) If you eat healthy food, you won't be ill!2) If the hole in the ozone layer gets bigger, the climate will be hotter.