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

The resources above correspond to the standards listed below:

Maine Standards

ME.A. Unifying Themes: Students apply the principles of systems, models, constancy and change, and scale in science and technology.
A.1. Systems: Students explain interactions between parts that make up whole man-made and natural things.
A.1.a. Give examples that show how individual parts of organisms, ecosystems, or man-made structures can influence one another.
ME.C. The Scientific and Technological Enterprise: Students understand the history and nature of scientific knowledge and technology, the processes of inquiry and technological design, and the impacts science and technology have on society and the environment.
C.3. Science, Technology, and Society: Students identify and describe the influences of science and technology on people and the environment.
C.3.b. Give examples of changes in the environment caused by natural or man-made influences.
ME.E. The Living Environment: Students understand that cells are the basic unit of life, that all life as we know it has evolved through genetic transfer and natural selection to create a great diversity of organisms, and that these organisms create interdependent webs through which matter and energy flow. Students understand similarities and differences between humans and other organisms and the interconnections of these interdependent webs.
E.1. Biodiversity: Students compare living things based on their behaviors, external features, and environmental needs.
E.1.b. Describe the changes in external features and behaviors of an organism during its life cycle.
E.2. Ecosystems: Students describe ways organisms depend upon, interact within, and change the living and non-living environment as well as ways the environment affects organisms.
E.2.b. Describe that organisms all over the Earth are living, dying, and decaying and new organisms are being produced by the old ones.
E.2.c. Describe some of the ways in which organisms depend on one another, including animals carrying pollen and dispersing seeds.
E.2.d. Explain how the food of most animals can be traced back to plants and how animals use food for energy and repair.
E.2.e. Explain how organisms can affect the environment in different ways.