Do trees carry instructions to grow and develop and do trees reproduce?

According to the cladogram, which organisms have roundworms as a common ancestor?

Students in biology are studying the macromolecules of life. they used a calorimeter to determine the calories in various types of food. once the lab was completed, the students ate the left over food samples. monica commented that in just 6 or 7 "chews" of the saltine, it was gone; nothing but a sticky paste in her mouth. elaborate on what happened chemically while chewing the saltine. include the macromolecules present.

Which part of the microscope controls the amount of light which shines through the lens?