Answer:
Plastics are made from natural materials such as cellulose, coal, natural gas, salt and crude oil through a polymerisation or polycondensation process. Plastics are derived from natural, organic materials such as cellulose, coal, natural gas, salt, and crude oil.
Answer: the Neolithic period
Explanation:
A period in history in which humans transitioned from hunting and gathering food to the farming of plants and animals is called the Neolithic period. People were starting to become farmers and their life got more settled.
This transition is also known as the Neolithic Revolution or the Agricultural Revolution.
I think sister groups. Imagine them having the same parents.
Answer:
Monosaccharides are simple sugars with a basic formula Cⁿ (H2O)ⁿ. They are classified according to the number of carbon atoms they contain: tetroses (4), pentoses (5) and hexoses (6). There are also mosaccharides with 3 carbon atoms, for example the Dihydroxyacetone.
Explanation:
Monosaccharides have to be aldehydes (-CHO) or ketones (-COO) with more than one alcohol function, which will be located in different carbons.
