Question

multiple choice questions answer the following multiple choice questions about the reading. 1. which of the following is the best definition of matter, based on the passage? a. a gas that traps heat. b. anything that has weight and takes up space. c. what makes things move or change. d. a type of soil made of dead plants. 2. according to the passage, what is a carbon sink? a. the effect of co2 trapping heat. b. a process where ice reflects sunlight. c. something that absorbs more carbon dioxide than it releases. d. a type of underground fire. 3. which of the following is an example of a positive feedback loop mentioned in the passage? a. burning fossil fuels releases co2, which is then absorbed by forests. b. zombie fires smolder underground and then pop back up in warmer weather. c. the earth gets warmer, ice melts, less sunlight is reflected, and the earth gets even warmer. d. healthy soil stores carbon, reducing the amount of co2 in the atmosphere.

Explanation:

1. Matter is defined as anything that has mass (weight in a gravitational - field context) and takes up space. Option B is correct.
2. A carbon sink is something that absorbs more carbon dioxide than it releases, which is the standard definition. Option C is correct.
3. A positive feedback loop in the context of climate change is when a change in the environment leads to further changes in the same direction. When the Earth warms, ice melts, less sunlight is reflected, and the Earth warms even more, which is a positive feedback loop. Option C is correct.

Answer:

1. B. Anything that has weight and takes up space.
2. C. Something that absorbs more carbon dioxide than it releases.
3. C. The Earth gets warmer, ice melts, less sunlight is reflected, and the Earth gets even warmer.