interaction of organisms in the ocean.
No resources have been tagged as aligned with this standard.
habitats change over time due to many influences; and
habitats change over time due to many influences.
construct and interpret simple models of different kinds of habitats, including a forest and a stream.
There are distinct differences in the nonliving and living components that make up pond, marshland, swamp, stream, river, ocean, desert, grassland, rainforest, and forest ecosystems (3.5 a).