Q: Answer the following question given this paragraph: Q: Where does digestion begin? Choices: - spicule cavity - excretory system - oral cavity - gastrovascular cavity A:
A: gastrovascular cavity

Q: Answer the following question given this paragraph: Natural Selection for a Polygenic Trait. Natural selection may affect the distribution of a polygenic trait. These graphs show three ways this can happen. Q: What evolutionary process may affect the distribution of a polygenic trait? Choices: - artificial selection - flow selection - characteristic selection - natural selection A:
A: natural selection

Q: Answer the following question given this paragraph: Investigation is at the heart of science. It is how scientists do research. Scientific investigations produce evidence that helps answer questions and solve problems. If the evidence cannot provide answers or solutions, it may still be useful. It may lead to new questions or problems for investigation. As more knowledge is discovered, science advances. Q: In science, what process produces evidence that helps answer questions and solve problems? Choices: - information - manipulation - suspension - investigation A:
A: investigation

Q: Answer the following question given this paragraph: 0 .033 g 1 .117 g 100 = 3 .0% When a series of measurements is precise but not accurate, the error is usually systematic. Systematic errors can be caused by faulty instrumentation or faulty technique. The difference between accuracy and precision is demonstrated in Skill Builder ES7. Q: When a series of measurements is precise but not what, the error is usually systematic? Choices: - velocity - length - color - accurate A:
A: accurate