Answer:
left to right across a period when it decreases and when it increases top to bottom in a group,
hope i helped
It is a molecule because hydrogen is an element.
An element is made up of molecules
Parasitism... basically a tick and a dog. The dog is the host, which is harmed by the tick.
Answer:
A solvent is a substance which dissolves a solute. When a solvent dissolves into a solute, it creates a solution
