Question: Answer the following question given this paragraph: Some of the pollutants from fossil fuels can be filtered out of exhaust before it is released into the air ( Figure below ). Other pollutants can be changed to harmless compounds before they are released. Two widely used technologies are scrubbers and catalytic converters. Q: Scrubbers and catalytic converters are examples of technologies that change what into harmless compounds? A:
OPTIONS:
- contaminants
- toxins
- mutations
- pollutants
Answer: pollutants

input with options: Answer the following question given this paragraph: Other dry climates get a little more precipitation. They are called steppes . These regions have short grasses and low bushes ( Figure below ). Steppes occur at higher latitudes than deserts. They are dry because they are in continental interiors or rain shadows. Q: What is the type of landscape that occurs at higher latitudes than deserts, has short grasses and low bushes, and are dry because they are in continental interiors? A:
OPTIONS:
- tundra
- plains
- plateau
- steppe
output: steppe

Q: Answer the following question given this paragraph: Besides entertaining a cat, laser light has many other uses. One use is carrying communication signals in optical fibers. Sounds or pictures are encoded in pulses of laser light, which are then sent through an optical fiber. All of the light reflects off the inside of the fiber, so none of it escapes. As a result, the signal remains strong even over long distances. More than one signal can travel through an optical fiber at the same time, as you can see in the Figure below . Optical fibers are used to carry telephone, cable TV, and Internet signals. Q: Sounds or pictures can be encoded in pulses of what, which are then sent through an optical fiber? A:

OPTIONS:
- kinetic energy
- microwaves
- quasars
- laser light

A: laser light

input: OPTIONS:
- calcium and helium
- nitrogen and helium
- hydrogen and carbon
- hydrogen and helium Now, answer this question: Answer the following question given this paragraph: The gas giants are mostly made of hydrogen and helium. These are the same elements that make up most of the Sun. Astronomers think that most of the nebula was hydrogen and helium. The inner planets lost these very light gases. Their gravity was too low to keep them and they floated away into space. The Sun and the outer planets had enough gravity to keep the hydrogen and helium. Q: What are the gas giants mostly made of . A:
A:
output: hydrogen and helium

Answer the following question given this paragraph: Radioactive decay is the breakdown of unstable isotopes into stable elements. For example, carbon-14 is an unstable isotope of carbon that decays to the stable element nitrogen-14. The rate of decay of an isotope is measured in half-lives. A half-life is the time it takes for half a given amount of an isotope to decay. Q: What is the term for the breakdown of unstable isotopes into stable elements? A:

OPTIONS:
- isotopic decay
- radioactive decrease
- secondary decay
- radioactive decay

Answer: radioactive decay

Q: Answer the following question given this paragraph: There is some variation in the inherited traits of organisms within a species. Without this variation, natural selection would not be possible. Q: What process would be impossible without some variation in the inherited traits of organisms within a species? A:

OPTIONS:
- environmental selection
- darwin's selection
- characteristic selection
- natural selection

A:
natural selection