Synonym: nuclear envelope, i.e. the double-layered membrane surrounding the nucleus of a eukaryotic cell, separating the nucleoplasm from the cytoplasm
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
Dinosaurs represented a major turn in the evolutionary development of organisms on Earth. The first dinosaurs were presu..
Plants in lentic habitats have features not found in terrestrial plants. They acquired these features as they adapt to t..
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
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