All animals depend on plants for food. some animals eat plants for food and other animals eat animals that eat plants. the plants depend on a source of energy too. what source of energy do the plants depend on?

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.