Have* this is because has* is past tense and have is more appropriate since there are multiple things you are referring too (Mercury, Venus, Earth and Mars). To be honest, these planets have a molten core.
Reagan believes that the institution of the Presidency belong to The people of America.
Hope this helps!
Answer:
I beieve that they use Charon's Boat.
Answer: Clothing prices changed throughout last year and it still stayed the same.
Explanation:
That's the first one you need to follow the first part of the sentence then continue with the word that's being replaced then add more words like it says in the instructions. Hope that helps <3