Q: Much of the iron produced is refined and converted into what? Read this paragraph and choose the correct option from the provided answers: Much of the iron produced is refined and converted into steel. Steel is made from iron by removing impurities and adding substances such as manganese, chromium, nickel, tungsten, molybdenum, and vanadium to produce alloys with properties that make the material suitable for specific uses. Most steels also contain small but definite percentages of carbon (0.04%2.5%). However, a large part of the carbon contained in iron must be removed in the manufacture of steel; otherwise, the excess carbon would make the iron brittle. Choices: - plastic - wood - sugar - steel A:
steel

(Question)
Q: What term is used to describe a change in the characteristics of living things over time? Read this paragraph and choose the correct option from the provided answers: Evolution is a change in the characteristics of living things over time. Evolution occurs by natural selection. Choices: - customization - generation - reproduction - evolution A:
(Answer)
evolution

Ques: Q: What group of gases are unusually unreactive? Read this paragraph and choose the correct option from the provided answers: Nonmetals tend to gain electrons in chemical reactions and have a high attraction to electrons within a compound. The most reactive nonmetals reside in the upper right portion of the periodic table. Since the noble gases are an unusually unreactive group, the element fluorine is the most reactive nonmetal. It is also not found in nature as a free element. Fluorine gas reacts explosively with many other elements and compounds and is considered to be one of the most dangerous known substances. Choices: - volcanic gases - greenhouse gases - halogens - noble gases A:
Ans: noble gases

(Q).
Q: Besides the concentration of dissolve oxygen and nutrients in the water, what other factor limits aquatic organisms? Read this paragraph and choose the correct option from the provided answers: Most aquatic organisms do not have to deal with extremes of temperature or moisture. Instead, their main limiting factors are the availability of sunlight and the concentration of dissolved oxygen and nutrients in the water. Choices: - rainfall - temperature - lake size - availability of sunlight A:
(A).
availability of sunlight

Ques:Q: When the monocilia are defective, what is disrupted? Read this paragraph and choose the correct option from the provided answers: Choices: - triggering - inhibiting - predicting - signaling A:

Ans:signaling

Question: Q: Meiosis in the sporophyte produces haploid cells called what? Read this paragraph and choose the correct option from the provided answers: Choices: - fibers - ions - seeds - spores A:
Answer:
spores