The correct answer is C) Wood burning. Hope this helps.
Sodium fluoride is a chemical that is added in many municipal water supplies to prevent tooth decay. You can even find it in your toothpaste if you look at the ingredients. Sodium fluoride is a very safe and effective chemical used in lots of oral products because of its benefits against tooth decay. Hope this helps!
Lichens and algae I believe
Answer:C. It carries cold water from the equator to the poles.
D. It wears away rock and soil.
E. It reflects sunlight that hits the oceans.
(hope this helps)