Science Buddies
Science Buddies: How Diets Affect Earthworms and the Soil They Enrich
In this environment-oriented experiment, you will mix it up with earthworms, soil, and various types of organic kitchen scraps. The basic idea is to set up small earthworm colonies to compost different types of food waste. You test the...
Other
Few: Human Impact on the Environment & Environmental Impact on Humans
Human beings have an enormous impact on the natural environment, and ultimately on each other. The way we chose to house, clothe, shelter, and meet the needs for vital resources such as food, energy, and water, not only affect the...
CK-12 Foundation
Ck 12: Life Science: Limiting Factors to Population Growth
[Free Registration/Login may be required to access all resource tools.] For a population to be healthy, factors such as food, nutrients, water and space, must be available. Limiting factors are resources or other factors in the...
CK-12 Foundation
Ck 12: Life Science: Importance of Protists
[Free Registration/Login may be required to access all resource tools.] Humans could not live on Earth if it were not for protists. Why? Protists produce almost one-half of the oxygen on the planet, decompose and recycle nutrients that...