The atomic number of H2O is 18 hence it contains 18 protons. Hope this helps.
Answer:
D
Explanation:
D Is The Answer Fella, My Head Hurt Really Bad
Because plastic products are durable, they can last for a long time. This makes them affordable because they do not have to be replaced often. On the other hand, the popular use of plastics means that many plastics are thrown away. Plastics litter the ocean, causing harm to marine birds and mammals. Plastic breaks down into plastic dust, which can last for up to a thousand years.
Grams per milliliter is the most common unit.