Answer the following question given this paragraph: Bacteria provide vital ecosystem services. They are important decomposers. They are also needed for the carbon and nitrogen cycles. There are billions of bacteria inside the human intestines. They help digest food, make vitamins, and play other important roles. Humans also use bacteria in many other ways, including:. Q: These microorganisms are abundant in the human digestive track and serve many roles. what are they? Choices: - antioxidants - pathogens - tumors - bacteria A:
bacteria
Answer the following question given this paragraph: The explosion of nitroglycerin releases large volumes of gases and is very exothermic. Q: The explosion of nitroglycerin, which releases large volumes of gases, is what type of reaction? Choices: - energetic - exponential - endothermic - exothermic A:
exothermic
Q: Answer the following question given this paragraph: Macroevolution refers to much bigger evolutionary changes that result in new species. Macroevolution may happen:. Q: What is the term for much bigger evolutionary changes that result in new species? Choices: - recalibration - breaking away - regression - macroevolution A:
A: macroevolution
Question: Answer the following question given this paragraph: Chemical reactions either absorb or release energy, which can be in the form of electricity. Electrochemistry is a branch of chemistry that deals with the interconversion of chemical energy and electrical energy. Electrochemistry has many common applications in everyday life. All sorts of batteries, from those used to power a flashlight to a calculator to an automobile, rely on chemical reactions to generate electricity. Electricity is used to plate objects with decorative metals like gold or chromium. Electrochemistry is important in the transmission of nerve impulses in biological systems. Redox chemistry, the transfer of electrons, is behind all electrochemical processes. Q: What is the name of a branch of the chemistry that deals with the interconversion of chemical energy and electrical energy? Choices: - Inorganic chemistry - Biochemistry - Theoretical Chemistry - electrochemistry A:
Answer: electrochemistry
*Question*
Answer the following question given this paragraph: An aquifer is an underground layer of rock that is saturated with groundwater. One of the biggest aquifers in the world is the Ogallala aquifer in the American Midwest. Q: An aquifer is an underground layer of rock that is saturated with what? Choices: - ocean water - wastewater - oil - groundwater A:
**Answer**
groundwater
Answer the following question given this paragraph: It might be fun to lay out in the sun like these two girls are doing. But getting too much sun can be very dangerous. Overexposure to sunlight raises your risk for skin cancer. Q: The risk of what is raised by overexposure to the sun? Choices: - particle cancer - flux cancer - brain cancer - skin cancer A:
skin cancer