The operation or activity of two or more things at the same time or rate
Every early December, the tree is traditionally lit by the president of the United States
The answer is indifference on apex
Rotten food from our farm
You use "it's" as a formal Contraction, it's short for 'it is' or 'it has'.
For example, 'it's a wonderful day's
You use "so" when you are describing something
For example, 'it's so hot'
"So" is also another word for "very", which is where the word originally generated. it's often mixed up with "such", but dont worry! you'll learn English alot soon!