Question: Background: Sand mining is a direct cause of erosion, and impacts the local wildlife.[2] Various animals depend on sandy beaches for nesting clutches, and mining has led to the near extinction of gharials (a species of crocodile) in India. Disturbance of underwater and coastal sand causes turbidity in the water, which is harmful for organisms like coral that need sunlight. It can also destroy fisheries, financially harming their operators. Removal of physical coastal barriers, such as dunes, sometimes leads to flooding of beachside communities, and the destruction of picturesque beaches causes tourism to dissipate. Sand mining is regulated by law in many places, but is often done illegally.[3] Globally, it is a $70 billion industry, with sand selling at up to $90 per cubic yard.[4] Paragraph: Two cities located at the sea shore between sand dunes, took 2 different approaches to their economic stability and sources of income for their inhabitants. Dune city was mainly focused on raising animals fishing and tourism, while Gulf city started sand mining operations because of the good prices they received per cubic yard of sand. Given the paragraph above, please answer correctly the following question: Which city made more money from sand mining?
Answer: Gulf

Question: Background: Because of human activities, there is more carbon dioxide in the atmosphere today than in the past hundreds of thousands of years. Burning fossil fuels and has released great quantities of carbon dioxide into the atmosphere. Cutting forests and clearing land has also increased carbon dioxide into the atmosphere because these activities reduce the number of autotrophic organisms that use up carbon dioxide in photosynthesis. In addition, clearing often involves burning, which releases carbon dioxide that was previously stored in autotrophs. Paragraph: There are two exact copies of planets, including the animals and plants on each planet. The only difference between these two planets, Necrulon and Krankor, is their choice of transportation. On Necrulon, they use fossil fuels to move their vehicles, and on Krankor they use water. Given the paragraph above, please answer correctly the following question: Which planet has less carbon dioxide in the atmosphere?
Answer: Krankor

Question: Background: While people have been able to prevent certain viral diseases by vaccinations for many hundreds of years, the development of antiviral drugs to treat viral diseases is a relatively recent development. Antiviral drugs are medications used specifically for treating the symptoms of viral infections. The first antiviral drug was interferon , a substance that is naturally produced by certain immune cells when an infection is detected. Over the past twenty years the development of antiretroviral drugs (also known as antiretroviral therapy, or ART) has increased rapidly. This has been driven by the AIDS epidemic. Paragraph: Bob was a medical student and he studied drugs administered to people with viral diseases, while his colleague Liam decided to study other types of drugs, such as antibiotics and anticoagulants. Given the paragraph above, please answer correctly the following question: Which colleague studied more about the development of antiviral drugs?
Answer:
Bob