(Question)
Q: These microorganisms are abundant in the human digestive track and serve many roles. what are they? Read this paragraph and choose the correct option from the provided answers: 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:. Choices: - antioxidants - pathogens - tumors - bacteria A:
(Answer)
bacteria

(Question)
Q: A quarry, which produces rocks and minerals used to make buildings and roads, is an example of what type of mine? Read this paragraph and choose the correct option from the provided answers: As the name suggests, open-pit mining creates a big pit from which the ore is mined. Figure below shows an open-pit diamond mine in Russia. The size of the pit grows as long as the miners can make a profit. Strip mines are similar to open-pit mines, but the ore is removed in large strips. A quarry is a type of open-pit mine that produces rocks and minerals that are used to make buildings and roads. Choices: - strip mine - fracking - gold mine - open-pit mine A:
(Answer)
open-pit mine

(Question)
Q: The kinetic energy of molecules is generally proportionate to what other property that they have? Read this paragraph and choose the correct option from the provided answers: The average kinetic energy of the molecules is proportional to the temperature of the sample. Choices: - variation - mass - precipitation - temperature A:
(Answer)
temperature