It helps the plants create oxygen for us to breathe
Answer: The answer is B- Cool Air Is Sinking
Explanation:
Hey, I am positive that your answer is...
A) Short course of antiviral drugs and antibiotics
Ionic bonds result when electrons are tranfered between atoms. Covalent bonds result when valence electrons are shared between atoms. You should be able to identify whether an ionic or covalent bond is being formed between atoms.