Answer:
I would say A
Explanation:
our ancestors are the people that lived long before us
Answer:
Q1: Gases, liquids and solids are all made up of atoms, molecules, and/or ions, but the behaviors of these particles differ in the three phases. ... gas are well separated with no regular arrangement. liquid are close together with no regular arrangement. solid are tightly packed, usually in a regular pattern.
Q2: Mass is how much stuff something is made of. Volume is how much space an object takes up.
A cation (+) will be smaller than its neutral atom, while anion (-) will be larger than its neutral atom.
Oxygen is the second. The first is nitrogen which makes up 78% of air. Oxygen makes up 21% of air.
