Quadrilateral. In Euclidean plane geometry, a quadrilateral is a polygon with four sides (or 'edges') and four vertices or corners. Sometimes, the term quadrangle is used, by analogy with triangle, and sometimes tetragon for consistency with pentagon (5-sided), hexagon (6-sided) and so on.
Some environmental scientists and specialists focus on environmental regulations that are designed to protect peopleâs health, while others focus on regulations designed to minimize societyâs impact on the ecosystem.
Environmental science is the study of physical, chemical and biological processes and how they affect the environment. Additionally, environmental scientists attempt to understand problems such as pollution, climate change, and resource depletion in a scientific manner. Individuals in this field will work in various locations and with varied employers in order to ensure the safety and preservation of resources and ecosystems.