Answer:
A
Explanation:
The iron corrodes so it oxidized
B. All atoms of silver have the same atomic number but different numbers of neutrons in the nucleus.
Answer:
The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun's gravitational pull, and the slower it moves in its orbit.
