You are given a background paragraph that describes one or more causal or qualitative relationships such as a relationship in economics or a scientific law and a story that makes use of the concepts or the relationship described in the provided paragraph. You need to come up with a question about the story that requires an understanding of the relationship described in the background paragraph. The generated question should not be answerable without both the background and story. Write a question about the story that requires a relationship in the background paragraph to answer. Check whether your question requires both the background paragraph and the story to answer. If your question can be answered by only one of these, try to rewrite your question so that it requires both. Note that "flipping" a word in the question can give rise to a new question where the answer will be different from the original question. Often, "flipping" a word gives rise to flipping the direction of the relationship, for example, from "increase" to "decrease."

Q: Background Paragraph: Similar to the results of a negatively charged rod, if a positively charged rod is brought near the knob of a neutral electroscope, it will attract some electrons up from the leaves onto the knob. That process causes both of the leaves to be positively charged (excess protons), and the leaves will diverge. If the positively charged rob is actually touched to the knob, the rob will remove some electrons and then when the rob is removed, the electroscope will remain positively charged. This is a permanent positive charge.
Story: Jim's dad is a scientist. While his dad is out working he goes to the lab in the basement and find an electroscope. The electroscope is currently in a neutral state. He then grabs a nearby rod that is positively charged and moves it near the knob of the electroscope. Fascinated he sees the leaves of the electroscope move apart from each other.

A: Given Jim actually touches the rod to the knob of the electroscope, will the rod remove electrons or add them?
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Q: Background Paragraph: Besides anthropogenic productivity of the land, the biodiversity of degraded land also declines, as previously mentioned.[12] With less biodiversity, this ecosystem is less adaptable to when disasters strike it[11][8] It has a smaller available food supply, in terms of plants, for animals, who then may die out or more likely may relocate. Proof of this decline is that presently 15-20% of Tibetan Plateau species are now considered endangered; and now because of this animal and plant absence, the soil quality of these degraded lands is very poor.[1] It does not hold the necessary nutrients, such as water, nitrogen, and carbon, essential to either supporting life or inviting life back to that land.[6] As a result of such carbon and nitrogen loss in the Tibetan Plateau, $8,033/ha and $13,315/ha were respectively lost in economic terms. Soils are further weakened by dust storms whose frequency increases because of degradation.[11][4] Erosion of soil becomes a bigger problem, since no longer are there as many plants to anchor in the soil. In the northern Chinese province alone, 400 million are affected every year with an associated 54 billion yuan of annual economic loss due to grassland degradation.
Story: Both Nicaragua and Costa Rica had large tract of pristine forests. They had one of the largest concentration of tropical species. In the 1980s Nicaragua started clearing up some of these forests. Instead, they have now vast tract of sugarcane production in that land. One can still visit Costa Rica where they kept those pristine forests intact.

A: If a disaster strikes, would Costa Rica's ecosystem adapt or fail?
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Q: Background Paragraph: Higher pressures increase the solubility of gases. You are probably familiar with this concept as it relates to carbonated beverages. Before opening the container, the inside is pressurized, so a large amount of CO 2 is dissolved in the liquid. After opening, the pressure decreases (to the ambient pressure), so the solubility of CO 2 drops, causing it to bubble out of solution. Because they are not compressible like gases, solid and liquid solutes do not have noticeable changes in solubility at different external pressures.
Story: Robin is an exterminator who is making new mixtures of chemicals to use for when he gets called to kill rats in his neighborhood. To make the mixtures, he has to dissolve nitrogen gas in containers of water. In one container, container A, he dissolves the nitrogen gas under high pressure. In the other container, container B, he dissolves the nitrogen gas under low pressure.

A:
Which container will have higher solubility of the nitrogen gas?
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