2.03 Ecosystems and Energy

Time to Reflect

Did you work up a sweat? Don't you feel energized! Energy—that's the bottom line isn't it? It's all about getting enough energy to carry out the activities of life. Take a minute to reflect.

• The sun is the primary energy source for all living things.
• Autotrophs trap and convert the sun's energy into usable chemical energy.
• There are several categories of heterotrophs depending on what they eat.
• There is a constant recycling of matter and movement of energy between autotrophs, heterotrophs, and decomposers.
• There is a decrease in total amount of energy as it travels up the food chain in an ecosystem.

Tour Debrief

To complete this activity make sure that you have:

• added new terms and their meanings to your Module 2 glossary page.
• completed the Food Webs activity.