Environmental Changes and Food Chains
The student is expected to observe and describe the physical characteristics of environments, and how they support populations and communities of plants and animals within an ecosystem; AND describe environmental changes, such as floods and droughts where some organisms thrive and others perish or move to new locations. The student is also expected to 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.
The student is expected to observe and describe the physical characteristics of environments, and how they support populations and communities of plants and animals within an ecosystem; AND describe environmental changes, such as floods and droughts where some organisms thrive and others perish or move to new locations. The student is also expected to 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.
In second grade, students identified factors in the environment, including temperature and precipitation, that affect growth and behavior, such as migration, hibernation, and dormancy of living things. Students have previously identified the basic needs of plants and animals. In addition, students have previously investigated evidence of interdependence in environments and were introduced to energy flow in food chain.
In second grade, students identified factors in the environment, including temperature and precipitation, that affect growth and behavior, such as migration, hibernation, and dormancy of living things. Students have previously identified the basic needs of plants and animals. In addition, students have previously investigated evidence of interdependence in environments and were introduced to energy flow in food chain.
In third grade, students learn to identify and describe the physical characteristics of an environment and determine ways these characteristics support the survival of organisms. Students will make predictions of how changes in ecosystems affect the survival of organisms. Students are introduced to the terms “drought” and “flood” to describe drastic changes in precipitation. Students should identify the effects of these events on changes in a food chain, and thus a change in an organism’s ability to survive/thrive in that environment.
In third grade, students learn to identify and describe the physical characteristics of an environment and determine ways these characteristics support the survival of organisms. Students will make predictions of how changes in ecosystems affect the survival of organisms. Students are introduced to the terms “drought” and “flood” to describe drastic changes in precipitation. Students should identify the effects of these events on changes in a food chain, and thus a change in an organism’s ability to survive/thrive in that environment.