Carbohydrates give energy to the body.
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A situation where friction would be desirable is rubbing your hands together to make them warm in the winter time.
D. because if they're not careful they become extinct by predators, then they have to be careful to survive by staying alert.
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autism
Answer:
If a solution has a higher concentration of hydronium ions than pure water, it has a pH lower than 7. A solution with a pH lower than 7 is called an acid. As the hydronium ion concentration increases, the pH value decreases. Therefore, the more acidic a solution is, the lower its pH value is.
Explanation:
