Answer:
I wrote this answer to get points lol
Explanation:
Most of the surface of the earth is covered with water and looks blue from space.
Isotopes of elements have same atomic numbers and different mass number(atomic masses).
A single-displacement reaction, also known as asingle-replacement reaction, is a type of chemicalreaction<span> where an element reacts with a compound and takes the place of another element in that compound. This type of </span>reaction<span> is typically pictured like this: Here, A replaces B in the compound BC.</span>
