Question

question 2 which type of bond holds atoms together in a water molecule? ionic bond covalent bond nuclear bond question 3 which four elements make up over 96% of the mass in our bodies?

Explanation:

In a water molecule ($H_2O$), hydrogen and oxygen atoms share electrons to form a bond. Covalent bonds involve the sharing of electron - pairs between atoms. The four elements that make up over 96% of the mass in our bodies are oxygen, carbon, hydrogen, and nitrogen.

Answer:

Question 2: B. covalent bond
Question 3: Oxygen, carbon, hydrogen, nitrogen