How do cool temperatures affect the activity of a fish? Do earthworms prefer to live in light or darkness? Do weeds interfere with the growth of other plants? R
Readers are offered step-by-step experiments in ecology that are sure to place high in any science fair. More important, however, the experiments provided show
How do cool temperatures affect the activity of a fish? Do earthworms prefer to live in light or darkness? Do weeds interfere with the growth of other plants? R
"Explains how to use the scientific method to conduct several science experiments about ecosystems. Includes ideas for science fair projects"--Provided by publi
"Explains how to use the scientific method to conduct several science experiments about ecosystems. Includes ideas for science fair projects"--Provided by publi