Organisms and Environments

3.9A: Observe and describe the physical characteristics of environments and how they support populations and and communities of plants and animals within an ecosystem.

3.9B: 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.

3.9C: Describe environmental changes as floods and droughts where some organisms thrive and others perish or move to new locations.

3.10A: Explore how structures and functions of plants and animals allow them to survive in a particular environment.

3.10B: 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 beetles.