That element is <span>Nitrogen.</span>
<span>A rainforest is an example of a community. A community refers
to the interaction of various species within a common geographic location.
Communities are also known as biological communities, where species interact
and co-exist with another to thrive and survive their given environment. </span>
The folds in the stomach lining are called rugae. On these rugae, you will find a thin line of mucous which helps protect the stomach lining. The innermost layer is called Simple Columnar Epithelium.
