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Biology

How do decomposers increase soil fertility? 1. By retaining moisture in the soil 2. By decomposing and digesting the remains of dead organisms 3. By creating spaces for air and water 4. By burrowing beneath the topsoil

what life process removes wastes

One side of your face is identical to the other side. You are _____. radially symmetrical asymmetrical bilaterally symmetrical

What is the narrow region on the earth from which a total eclipse is visible?

Which of the following is the best example of a way human lifestyles affect environmental systems? Burning fossil fuels increases the amount of greenhouse gases in the atmosphere. Using radioactive materials causes ground pollution when chlorofluorocarbons (CFCs) seep into the ground. Deforestation causes water pollution by decreasing water vapor in nearby lakes and rivers. Using aerosol sprays increases the amount of ozone (O3) in the atmosphere.

Which of the following is not a typical way for a person to catch a disease? A. From pathogens in boiled water. B. From pathogens in the air. C. From pathogens in poorly cooked food. D. From physical contact with an infected person. If you were investigating the cause of a mysterious disease, which of the following would not be important to determine? A. What food the diseased people recently ate. B. Who the diseased people recently contacted. C. Where the diseased people recently were. D. The wealth of the diseased people. Where would a disease transmitted by person-to-person contact most likely spread quickly? A. In a remote region with infrequent contact between people. B. In a rural farming community with homes miles apart. C. In a crowded city. D. In a medical lab where people wear protective gear and equipment is regularly sterilized. What type of disease transmission does the graph below most likely represent? Graph of disease spread A. Person to person. B. Foodborne. C. Airborne. D. Both foodborne and airborne. Which pattern most likely indicates a foodborne illness? A. All the victims worked in the same office. B. All the victims were friends. C. All the victims shopped at the same supermarket. D. All the victims exhibited the same symptoms.

_____ is a carcinogen that promotes colon cancer.

By which process are CO2 and H2O converted to carbohydrates?

Two species of sparrows look remarkably similar. However, when a scientist attempted to mate them, he noticed that despite their similarities, they didn't interbreed. Which evolutionary force could explain this observation?

On Aristotle's scala naturae, humans were:

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