Energy, producers and consumers diagrams

explanation:

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.

b.

characteristics of hydrocarbons

it is a limiting nutrient limited by a single nutrient in the ecosystem, & the single goes very slow.