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Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
Seed plants are vascular plants. They differ from the other vascular plants in producing seeds that germinate into a new..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..