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
Answer the following question given this paragraph: Variation and Adaptation Natural selection can only take place if there is variation, or differences, among individuals in a population. Importantly, these differences must have some genetic basis; otherwise, selection will not lead to change in the next generation. This is critical because variation among individuals can be caused by non-genetic reasons, such as an individual being taller because of better nutrition rather than different genes. Genetic diversity in a population comes from two main sources: mutation and sexual reproduction. Mutation, a change in DNA, is the ultimate source of new alleles or new genetic variation in any population. An individual that has a mutated gene might have a different trait than other individuals in the population. However, this is not always the case. A mutation can have one of three outcomes on the organisms' appearance (or phenotype):. Q: Genetic diversity in a population comes from two main sources - sexual reproduction and what else? Choices: - radiation - education - pathogen - mutation A:
mutation
Q: Answer the following question given this paragraph: Common acids and the polyatomic anions derived from them have their own names and rules for nomenclature. The nomenclature of acids differentiates between oxoacids, in which the H+ ion is attached to an oxygen atom of a polyatomic ion, and acids in which the H + ion is attached to another element. Carboxylic acids are an important class of organic acids. Ammonia is an important base, as are its organic derivatives, the amines. Q: What class of acids do carboxylic acids fall under? Choices: - hydrochloric acids - inorganic acids - carbolic acids - organic acids A:
A: organic acids
Question: Answer the following question given this paragraph: An aquifer is a saturated layer of rock or soil. Q: What is defined as a saturated layer of rock or soil? Choices: - river bank - artesian well - culvert - aquifer A:
Answer: aquifer
*Question*
Answer the following question given this paragraph: Renewable resources can be replaced at the rate they are being used. Q: What do you call resources that can be replaced at the rate they are being used? Choices: - viable - abundant - innovative - renewable A:
**Answer**
renewable
*Question*
Answer the following question given this paragraph: 10.6 Exercise and Muscle Performance Hypertrophy is an increase in muscle mass due to the addition of structural proteins. The opposite of hypertrophy is atrophy, the loss of muscle mass due to the breakdown of structural proteins. Endurance exercise causes an increase in cellular. Q: Loss of muscle mass due to breakdown of structural proteins is known as what? Choices: - distrophy - mutation - exhaustion - atrophy A:
**Answer**
atrophy