0 conditional.

If you smoke, your skin (age) more quickly.

Water evaporates if you (boil) it.

If you heat ice, it (melt).

If it doesn't (rain), plants cannot grow.

If I (try) to cook, I ruin the food.

Deren (cycle) to work if the weather is good.

If Andy (go) to bed late, he cannot wake up early.

I feel sick if I (eat) too much chocolate.

You need to take my sister to the hospital if she (drink) milk as she is allergic to it.

I feel good if you (visit) me regularly.