Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..
This tutorial looks at the adaptations of freshwater plants for them to thrive in still water habitats. Familiarize your..
Mutations can also influence the phenotype of an organism. This tutorial looks at the effects of chromosomal mutations, ..
Geological periods is a study guide that cites the different geological periods on Earth's timeline. Each has a brief ov..
If the balance of nature is left untouched, landscapes can change dramatically over time. A previous ecosystem is supers..
Illusions are the perceptions and sensory data obtained from situations in which human error prevents us from seeing the..