a) There are four kinds of coal depending on their carbon content. ⇒ False
b) Coal is usually found in liquid state. ⇒ False
c) Fossil fuels are the result of the descomposition of plants and animals from the past. ⇒ True
d) Petroleum is the cheapest source of energy.⇒ True
When some one is hurt or when some one has asma and u need to help them
The correct answer would be B.(2nd one)
There are seven major classes of nutrients:
carbohydrates, fats, fiber, minerals, protein, vitamins, and water.
