The answer is b.) Levi crosses a horse with a donkey to a create a mule. The mule is stronger than both of its parents.
Explanation:
I'm pretty sure 1. yes 2. no and 3. it might be yes but I'd just put a maybe
If an atom gains an electron and gets a negative charge because of it, it is a negatively charge ion AKA an anion.
Mass number (A) =protons (p+) + neutrons(n°)
