How would rain affect animals and plants?

All vegetation needs water. Without water vegetation dies. However, various plants need varying amounts of water and various plants need water under different conditions.

Some plants such as cypress can grow in moist soil. Others such as cactus can survive for months without rain. All need the water that rain provides.

The water in most cities contains chemicals that are not good for plants. City water can be used to keep plants from wilting but rainwater will wash away the chemicals from city water and provide a better more natural environment for plants.