Most of the nitrogen in the biosphere is located in the atmosphere as a component of air. Air is a mixture of gases and one of these gases is nitrogen. Nitrogen has the highest percentage by volume out of all the gases that made up the air. Nitrogen is a very important element in the biosphere and it is needed by both plants and animals.
Answer: D. adaptations that organisms make to the environment during their lifetimes.
Adaptation is a process in which changes occurs in an organism so as to make it better suited for the environment. It is the result of natural selection. In adaptation the traits of an organism gets modified by the process of natural selection which results in evolution of an organism.
