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...
Biodiversity is essential for a healthy planet and helps ecosystems stay stable and productive. If you go to the zoo, you will see a lot of different animals with different characteristics, and there is...
