1) If you're going to read more books about insects, you will know far more about their lives.
2) If you're going to sleep in the open air (outside the home), you won't have to worry (you will cure your headache).
3) We'll go ( go) On a picnic, if the forecast showers (unless you are predicting showers).
4) When people will be able to influence climate, our lives will become easier.
5) If people will not pollute water and air, their habitat will be cleaner.