A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..
This tutorial introduces flowing water communities, which bring new and dithering factors into the equation for possible..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
A sensory system is a part of the nervous system consisting of sensory receptors that receive stimuli from the internal ..
