Protecting living organisms from extinction has become one of the most important challenges facing our world today. Awareness of the need to protect natural life increased following the severe adverse effects that emerged since...
Non-metals are the elements that have more than four electrons in their outermost energy levels. The non-metals are characterized by the smallest atomic sizes and the largest electronegativity.
Metals are elements that are typically: Shiny (lustrous), Good conductors of heat and electricity, Malleable (can be hammered into sheets), Ductile (can be drawn into wires), and Solid at room temperature (except mercury).
The Red List is a list issued by the International Union for Conservation of Nature (IUCN) every year, and indicates the endangered species and the endangerment level of each case. The International Union for...
