Question

how wildlife and vegetation is usefull for us

Answer 1

Vegetation serves several critical functions in the biosphere, at all possible spatial scales.

First, vegetation regulates the flow of numerous biogeochemical cycles, most critically those of water, carbon, and nitrogen; it is also of great importance in local and global energy balances.

Such cycles are important not only for global patterns of vegetation but also for those of climate.

Answer 2

Vegetation serves several critical functions in the biosphere, at all possible spatial scales. ... Vegetationis also critically important to the world economy, particularly in the use of fossil fuels as an energy source, but also in the global production of food, wood, fuel and other materials.