This tutorial looks at some of the communities in freshwater lentic habitats. For instance, symbiosis occurs in a commun..
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Control of Growth & Development tutorials look at how the genetic makeup determines the biological processes on a da..
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
