Answer the following question given this paragraph: Population growth is determined by rates of birth, death, immigration, and emigration. Q: Population growth is determined by rates of birth, death, immigration, and what else? Choices: - excitation - relaxation - exploitation - emigration A:
emigration
Answer the following question given this paragraph: For a better understanding of alkaline Earth metals, let's take a closer look at two of them: calcium (Ca) and strontium (Sr). Calcium is a soft, gray, nontoxic alkaline Earth metal. Although pure calcium doesn't exist in nature, calcium compounds are very common in Earth's crust and in sea water. Calcium is also the most abundant metal in the human body, occurring as calcium compounds such as calcium phosphate and calcium carbonate. These calcium compounds are found in bones and make them hard and strong. The skeleton of the average adult contains about a kilogram of calcium. Because calciumlike bariumabsorbs x-rays, bones show up white in x-ray images. Calcium is an important component of a healthy human diet. Good food sources of calcium are pictured in Figure below . Q: What is a soft, gray, nontoxic alkaline earth metal? Choices: - pewter - magnesium - potassium - calcium A:
calcium
Q: Answer the following question given this paragraph: Positive Feedback Positive feedback intensifies a change in the body's physiological condition rather than reversing it. A deviation from the normal range results in more change, and the system moves farther away from the normal range. Positive feedback in the body is normal only when there is a definite end point. Childbirth and the body's response to blood loss are two examples of positive feedback loops that are normal but are activated only when needed. Childbirth at full term is an example of a situation in which the maintenance of the existing body state is not desired. Enormous changes in the mother's body are required to expel the baby at the end of pregnancy. And the events of childbirth, once begun, must progress rapidly to a conclusion or the life of the mother and the baby are at risk. The extreme muscular work of labor and delivery are the result of a positive feedback system (Figure 1.11). Q: What type of feedback intensifies a change in the body's physiological condition rather than reversing it? Choices: - negative feedback - neutral feedback - susceptible feedback - positive feedback A:
A: positive feedback
Question: Answer the following question given this paragraph: The polymerase chain reaction is a way of making copies of a gene. It uses high temperatures and an enzyme to make new DNA molecules. The process keeps cycling to make many copies of a gene. Q: The polymerase chain reaction is a way of making copies of what? Choices: - an enzyme - a method - a form - a gene A:
Answer: a gene
*Question*
Answer the following question given this paragraph: Mammals may be herbivores, carnivores, or omnivores. Some carnivore mammals eat mainly insects and are called insectivores. Some omnivore mammals eat mainly fruits and are called frugivores. Q: What do you call a carnivore that eats mainly insects? Choices: - pescatorian - predator - omnivores - insectivores A:
**Answer**
insectivores
(Q).
Answer the following question given this paragraph: Why is animal communication important? Without it, animals would not be able to live together in groups. Animals that live in groups with other members of their species are called social animals . Social animals include many species of insects, birds, and mammals. Specific examples of social animals are ants, bees, crows, wolves, lions, and humans. To live together with one another, these animals must be able to share information. Q: Animals that live in groups with other members of their species are called what? Choices: - present animals - common animals - energetic animals - social animals A:
(A).
social animals