A. The flat area surrounding the river is called a floodplain. Why do you think it has this name?
BIL
build a house in a floodnlain?

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.

2%? i tried finding the exact sorry if it's not 100% correct ; -;