The amount of water a body requires for survival is dependent upon the climate and individuals level of physical activity

The recommendation of health professionals is to drink 8-10 glasses of water daily. But this is dependent on the climate and the activity the person is engaged into. For instance, an athlete who is training needs to drink more water to replace all the water lost in his body during training than compared to a person not training or exercising.

If you remove all the lions from the savanna it will lead to a increase of gazelle and a increase of cheetahs becasue of no competition

When the sun hits the plant and the plant has water