Ques:Q: Cutting down on the use of chemical fertilizers and preserving wetlands are ways to prevent what "unlivable" regions in bodies of water? Read this paragraph and choose the correct option from the provided answers: Cutting down on the use of chemical fertilizers is one way to prevent dead zones in bodies of water. Preserving wetlands is also important. Wetlands are habitats such as swamps, marshes, and bogs where the ground is soggy or covered with water much of the year. Wetlands slow down and filter runoff before it reaches bodies of water. Wetlands also provide breeding grounds for many different species of organisms. Choices: - inhabitable zones - hostile zones - fresh zones - dead zones A:

Ans:dead zones
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Ques:Q: What is the only planet that is known to support life? Read this paragraph and choose the correct option from the provided answers: Mars is a lot like Earth. Mars is rocky and has an atmosphere. Mars even has water! But Mars (and Mercury, Venus, the Moon, Jupiter, Saturn, Uranus and Neptune) does not have any evidence of life. Life is what makes Earth unique. It is also part of Earth's dynamic nature. Life is part of many Earth processes. Life is also dynamic in itself. Constantly adapting and evolving, life forms are always changing. Except those that are so well adapted to their environment, they haven't changed in hundreds of millions of years. Choices: - Venus - Mars - Saturn - earth A:

Ans:earth
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Ques:Q: Mutations cannot be passed on to offspring if they occur in what type of cells? Read this paragraph and choose the correct option from the provided answers: Mutations that occur in body cells cannot be passed on to offspring. They are confined to just one cell and its daughter cells. These mutations may have little effect on an organism. Choices: - put cells - kept cells - blood cells - body cells A:

Ans:body cells
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Ques:Q: What is the term for proportion of amount of product actually produced in a chemical reaction versus predicted amount ? Read this paragraph and choose the correct option from the provided answers: Chemical reactions in the real world don't always go exactly as planned on paper. In the course of an experiment, many things will contribute to the formation of less product than would be predicted. Besides spills and other experimental errors, there are usually losses due to an incomplete reaction, undesirable side reactions, etc. Chemists need a measurement that indicates how successful a reaction has been. This measurement is called the percent yield. Choices: - calculus yield - decrease yield - percent impact - percent yield A:

Ans:
percent yield
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