Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
Learn about community patterns and the ecological factors influencing these patterns. Revisit some of the ecosystems you..
This tutorial presents Gregor Mendel's law of dominance. Learn more about this form of inheritance and how it can be pre..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..