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"Study Hundreds of Biology Questions and Be Prepared for the Exams"

Lovely resources and images for biology and life sciences teachers

Understanding Science gives users an inside look at the general principles, methods, and motivations that underlie all of science

Searchable according to grade level, resource type, collections and standards

A free science library and personal learning tool brought to you by Nature Publishing Group, the world's leading publisher of science.

"Scitable currently concentrates on genetics, the study of evolution, variation, and the rich complexity of living organisms. As you cultivate your understanding of modern genetics on Scitable, you will explore not only what we know about genetics and the ways it impacts our society, but also the data and evidence that supports our knowledge."

"Worried about your impact on the environment? The way we use the planet's resources makes up our ecological footprint. Measuring yours takes less than 5 minutes and could set you on a life-changing journey... "