What is a hypothesis??

a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.

Explanation:

A hypothesis is similar to an opinion or an idea

for  example, forests have higher evapotranspiration than other ecosystems,  such  as grasslands, because of their deeper roots and greater leaf area. thus forests have a net moistening effect on the atmosphere and become a moisture source for downwind ecosystems.

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