The human body is built with its own immunity system. It provides defenses against foreign objects in the body and prevents disease. Specific diseases have a specific reaction- the immune system has a mechanism of response for each particular foreign substances. A foreign molecule that draws spec...

Extremophiles The term extremophiles is applied to groups of microorganisms that live and thrive in places where most living creatures could not survive. Extremophiles can be grouped into two categories; Bacteria, simple celled creatures whose cells lack a nucleus, and eukarya, whose cell...

Sometime during our lives, we've questioned ourselves at one point just how long has the earth existed and how did life begin? Our Biology book written by: Solomon, Berg, and Martin, shows theories that has taught us that earth is approximately 4.6 billion years old, and the earliest pieces of li...