Answer:
Common examples include carbon, sulfur, oxygen, iron, copper, aluminium. Elements are represented by symbols. Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction.
Explanation:
Substances can be categorised as either elements or compounds. Both of these are made up of atoms, the only difference is an element is made of one type of atom whereas compounds are made of two or more different types of atoms.
<span> it is a faster means of reconnaissance then ground surveying </span>
D. DNA replication
DNA always forms proteins
The process of __clonal selection__
B. Tundra - only biome with snow
