8. What is an organ made of?

An organ is made of several types of tissue and therefore several types of cells.

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) the inside picture would look at a very high temperature in a very low ph