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Texas Essential Knowledge and Skills (TEKS)

Environments & Ecosystems

Grade: 3rd Grade
Standard:

3.9.A

Description:

observe and describe the physical characteristics of environments and how they support populations and communities of plants and animals within an ecosystem;

Standard:

3.9.B

Description:

identify and describe the flow of energy in a food chain and predict how changes in a food chain affect the ecosystem such as removal of frogs from a pond or bees from a field; and

Standard:

3.9.C

Description:

describe environmental changes such as floods and droughts where some organisms thrive and others perish or move to new locations.

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