Which of these statements might describe an organism's niche?

eats berries

nest sitting on a tree branch

meadow

lake michigan

Which blood cell spend most of their time in the lymphatic system?

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f о

Match each description with the correct form of energy. 1. energy of an object's position above the ground. 2. stored in the bonds of atoms and molecules 3. stored in the nucleus of an atom 4. energy of vibrating molecules 5. movement of objects used to do work 6. created by vibrations in electric and magnetic fields chemical energy mechanical energy heat gravitational energy light nuclear energy