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Our Glaciers: Then and Now activity kit helps you see the changes taking place in glaciers around the world. See all our activity kits and classroom activities.
A meal fit for a human heterotroph!
C.Alexander

Living Things Get Energy from Different Sources

We all know that living things need food to survive, but not all life forms eat the same things. Autotrophs, known as *self-feeders* are beings which create "food" using energy from the sun, heat energy from the Earth, or other means to feed themselves. Heterotrophs, known as *other-feeders* are beings which feed themselves by eating other creatures, plant life, or food which exist outside of themselves. On Earth, nature provides the following three ways for living creatures to get energy.


Last modified January 11, 2005 by Lisa Gardiner.

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Traveling Nitrogen is a fun group game appropriate for the classroom. Players follow nitrogen atoms through living and nonliving parts of the nitrogen cycle. For grades 5-9.

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Traveling Nitrogen Classroom Activity Kit

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