What is functions of the chloroplasts

Which potential solution below best addresses the issue of loss of biodiversity in a north american ecosystem?

An easy way to calculate the amount of energy available at each level is to what?

Which of the following is most likely the result of an organism having lipids in its body a) water cannot be absorbed through the surface of a leaf b)human eats fruits to get a quick source of energy c) a sheep sleeps for more hours in the winter d) a warm river is filled with fish and algae