According to the law of conservation of momentum, in a system the initial total momentum before collision equals the final total momentum

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.

c. movement because i took the test and it lets me review my answers

blue

light-years

magnitude

the answer is c on e2020, bud.