Which two systems interact to produce and deliver energy to cells of the body? Circulatory and endocrine Integumentary and digestive Digestive and circulatory Circulatory and nervous

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.

feral cats are estimated to eat tens of millions of native animals each night in australia

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.