Science Worksheets and Study Guides Third Grade. What are Ecosystems?

The resources above correspond to the standards listed below:

Texas TEKS Standards

TX.112.14. Science, Grade 3.
(3.10) Organisms and environments. The student knows that organisms undergo similar life processes and have structures that help them survive within their environments. The student is expected to:
3.10 (C) Investigate and compare how animals and plants undergo a series of orderly changes in their diverse life cycles such as tomato plants, frogs, and lady bugs.
(3.9) Organisms and environments. The student knows that organisms have characteristics that help them survive and can describe patterns, cycles, systems, and relationships within the environments. The student is expected to:
3.9 (A) Observe and describe the physical characteristics of environments and how they support populations and communities within an ecosystem.
3.9 (B) 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.