I would say b or at least that’s what it was on my test
The matter can be classified in two different ways; (a) according to its state, and (b) according to its composition. Matter can exist in three different states, solid, liquid, and gas, based on the way the atoms and molecules are arranged inside them.
My guess is latin, it is more of a specialized language with limited uses
A.) Guanine = 45
B.) Adenine = (100 - 90 )/ 2 = 10/2 = 5
Hope this helps!
B. The water is likely contaminated with high levels of pollution or waste
