Which organic compound, used for stored chemical energy, contains carbon ,hydrogen, oxygen and often phosphorus

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

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