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Insects

There are more species of insects than any other species combined. This surely illustrates that insects have the selecti..

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Biological Cell Introduction

It only takes one biological cell to create an organism. A single cell is able to keep itself functional through its 'mi..

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Roots

This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..

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Fish

The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..

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Examples of Natural Selection

Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..

Lights' Effect on Growth
Lights’ Effect on Growth

This tutorial elaborates on the effect of light on plant growth. It describes how different plants require different amo..