Organisms employ different strategies to boost its defenses against antigens. Humans have an immune system to combat pat..
Hormones are produced in the endocrine glands of animals. The pituitary gland and hypothalamus are the most impor..
A running water environment offers numerous microhabitats for many types of animals. Similar to plants, animals in lotic..
While learning and intelligence are associated with the functions of a conscious mind, sleep and dreams are activities o..
This study guide tackles plant roots in greater detail. It delves into the development of plant roots, the root structur..
Explore why New Zealand has such unique flora and fauna, and learn why long periods of geographical isolation. This less..