Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
A still body of water may be disturbed by a variety of factors. One of them is wind. In fact, it is considered as the pr..
This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..
This tutorial elaborates on the physical development of humans, particularly from puberty to adulthood. Read this tutori..
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..