Look at the diagram of the food web. A decrease in the number of willow trees will MOST LIKELY affect which organism in the
food chain?

D) snowshoe hare

Explanation:

This is because the snowshoe hare is the only one that eats from the willow tree in this food chain, but the number of snowshoe hares won't decrease because they can also eat from white spruce. So if the number of snowshoe hares won't decrease, then none of the other organisms will be affected.

(I attached the diagram of the food web.)

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.