Answer the following question given this paragraph: Population size is the number of individuals in a population. Population density is the average number of individuals per unit of area or volume. The pattern of spacing of individuals in a population may be affected by characteristics of a species or its environment. Q: What is the average number of individuals per unit of area or volume called? Choices: - crowdedness - population structure - population count - population density A:
population density
Answer the following question given this paragraph: Q: What is the key issue in the small-population approach? Choices: - disease variation - genetic mutation - alternative variation - genetic variation A:
genetic variation
Q: Answer the following question given this paragraph: You can see how water for drinking is treated in Figure below . Treating drinking water requires at least four processes: 1. Chemicals are added to untreated water. They cause solids in the water to clump together. This is called coagulation. 2. The water is moved to tanks. The clumped solids sink to the bottom of the water. This is called sedimentation. 3. The water is passed through filters that remove smaller particles from the water. This is called filtration. 4. Chlorine is added to the water to kill bacteria and other microbes. This is called disinfection. Finally, the water is pure enough to drink. Q: When drinking water is treated, what is the term for when chemicals cause solids in the water to clump together? Choices: - clumping - oxidation - plasma - coagulation A:
A: coagulation
Question: Answer the following question given this paragraph: Wind power, a renewable resource, shown here in a modern wind energy farm. The wind is used to turn turbines that generate electricity. Q: Is wind power renewable or non renewable? Choices: - depends - neither - non renewable - renewable A:
Answer: renewable
*Question*
Answer the following question given this paragraph: The rate of breathing is regulated by the brain stem. It monitors the level of carbon dioxide in the blood and triggers faster or slower breathing as needed to keep the level within a narrow range. Q: Which part of the brain regulates the rate of breathing? Choices: - brain stem - brain uptake - brain charge - brain stem A:
**Answer**
brain stem
(Q).
Answer the following question given this paragraph: An acid is an ionic compound that produces positive hydrogen ions when dissolved in water. Acids taste sour and turn blue litmus paper red. Q: What is the term for an ionic compound that produces positive hydrogen ions when dissolved in water? Choices: - hydrocarbon - sulfur - base - acid A:
(A).
acid