Water pressure in stem leaves help to keep a plant rigid. A plant wilts when there is a lack of water. How to interactions at the cell and tissue levels cause a plant to wilt? Explain your reasoning.

Explain why phospholipid molecules form a bilayer. (3 marks)

Which organ controls breathing? lungs alveoli heart diaphragm

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water