Answer the following question given this paragraph: Q: What is water falling from the sky called? Choices: - vaporization - erosion - distillation - precipitation A:
precipitation

Answer the following question given this paragraph: Note Organic and biochemical equations are frequently written showing only the organic reactants and products. In this way, we focus attention on the organic starting material and product, rather than on balancing complicated equations. Ethanol is oxidized in the liver to acetaldehyde:. Q: Organic and biochemical equations show the initial and final products of the equation, respectively known as the reactants and what else? Choices: - consumers - dividends - reactors - products A:
products

Answer the following question given this paragraph: A model serves a useful purpose it gives us an idea of what the real thing is like. The model plane seen above has wings, a tail, and an engine just like the real thing. This model also has a propeller, as is the case with most small planes and some smaller passenger planes. However, the model is not the real thing. We certainly cannot fly people or cargo in the model (besides maybe a tiny mouse), but we can get some idea of what a real plane looks like and how it works. Q: What are models good for? Choices: - they are expensive to make - they are identical to the real thing - they are independent variables - they give us an idea of what the real thing is like A:
they give us an idea of what the real thing is like