This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
The blood sugar level is regulated by two hormones. The mechanism behind this type of negative feedback control is descr..
If New Zealand has lots of unique animals, it's also got a whole lot of unique plants. Find out more about some of them,..
Freshwater ecosystem is comprised of four major constituents, namely elements and compounds, plants, consumers, and deco..
Some of the body movements can be controlled at will, others cannot. The body has a motor program, which is the pattern ..
