Children will learn important facts about food chains in these worksheets.

This packet of worksheets introduces children to food webs, an important life science concept.

These worksheets help kids understand food webs, an important part of the life science curriculum in fourth grade.

Get to know the residents of the reef with this coral reef-themed crossword, perfect for expanding life science knowledge and working on vocabulary, too!

Learn all about the ooey-gooey areas of land called wetlands that provide a home for certain kinds of plants and animals.

Learn more about two kinds of aquatic biomesÃfreshwater and saltwater biomesÃand how you can tell them apart.

Learn more about what lives--and what thrives--in marshes with this fill-in-the-blank worksheet on marsh ecosystems.

Did you know that invertebrates don't have backbones? Find out some different types of invertebrates with the clues in this crossword puzzle.

Find out more about what REALLY dwells in swamp ecosystems with this worksheet all about swamps.

Test your knowledge of prehistoric animals with this life sciences crossword puzzle!