All living things need energy to survive and carry out life processes. Humans need energy to walk, run, or play sports. Birds need energy to fly, and fish need energy to swim. Plants need energy to produce food during photosynthesis. How is energy transferred from one organism to another?

Organisms can be classified into three main categories: producers, consumers, and decomposers. In this resource, you will focus on producers and consumers.

Click on the pictures below to learn more about each category.

Consumers are classified into groups by what they eat. The shape of a consumer’s teeth is an adaption for the type of food they eat. Click on the pictures below to learn more about the different groups of consumers.