There are many environmental factors that arise due to the usage of water in one way or another and for every action tha..
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
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Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
The human respiratory system is an efficient system of inspiring and expiring respiratory gases. This tutorial provides ..
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..
