Ques: Answer the following question given this paragraph: Epidemiologist Epidemiology is the study of the occurrence, distribution, and determinants of health and disease in a population. It is, therefore, related to public health. An epidemiologist studies the frequency and distribution of diseases within human populations and environments. Epidemiologists collect data about a particular disease and track its spread to identify the original mode of transmission. They sometimes work in close collaboration with historians to try to understand the way a disease evolved geographically and over time, tracking the natural history of pathogens. They gather information from clinical records, patient interviews, and any other available means. That information is used to develop strategies and design public health policies to reduce the incidence of a disease or to prevent its spread. Epidemiologists also conduct rapid investigations in case of an outbreak to recommend immediate measures to control it. Epidemiologists typically have a graduate-level education. An epidemiologist often has a bachelor's degree in some field and a master's degree in public health (MPH). Many epidemiologists are also physicians (and have an MD) or they have a PhD in an associated field, such as biology or epidemiology. Q: What science is the study of the occurrence, distribution, and determinants of health and disease in a population? Choices: - physiology - toxicology - histology - epidemiology A:
Ans: epidemiology

Ques: Answer the following question given this paragraph: continental margin : The transition from the land to the deep sea. The continental margin is made of continental crust. More than one-quarter of the ocean basin is continental margin. Q: What is the continental margin made of? Choices: - boundary crust - pangea - continental drift - continental crust A:
Ans: continental crust

Ques: Answer the following question given this paragraph: Climate conditions in a small area may be different from those of the surroundings. The climate of the small area is called a microclimate . The microclimate of a valley may be cool relative to its surroundings since cold air sinks. The ground surface may be hotter or colder than the air a few feet above it. This is because rock and soil gain and lose heat readily. Different sides of a mountain will have different microclimates. In the Northern Hemisphere, a south-facing slope receives more solar energy than a north-facing slope. Each side supports different amounts and types of vegetation. Q: What is the climate of a small area called? Choices: - ecosystem - biome - microevolution - microclimate A:
Ans: microclimate

Ques: Answer the following question given this paragraph: Metalloids such as boron have an outer energy level that is about half full. These elements need to gain or lose too many electrons for a full outer energy level to come about easily. As a result, these elements are not very reactive. They may be able to conduct electricity but not very well. Q: About how full is the outer energy level in metalloids? Choices: - nearly empty - three-fourth full - a quarter full - half full A:
Ans:
half full