[Q]: You are given a new situation: City D's mayor wants to invite more businesses in the city. Three firms, firm A, firm B, and firm C, took advantage of this opportunity. Firm A does not require large initial costs, but firm B and firm C require large initial costs. Firm B managed to increase its market share, but firm C failed to increase its market share. and a hint : A firm with high fixed costs requires a large number of customers in order to have a meaningful return on investment. This is where economies of scale become important. Since each firm has large initial costs, as the firm gains market share and increases its output the fixed cost (what they initially invested) is divided among a larger number of customers. Therefore, in industries with large initial investment requirements, average total cost declines as output increases over a much larger range of output levels. Please answer this question : Which frim's average total cost would not decline, firm B or firm C?
****
[A]: firm C

[Q]: You are given a new situation: Big town and Fair town both used petroleum products. Big town used them to make plastics and related materials, but didn't use it for gas, because they were environmentally conscious and used only electric vehicles for transportation. Fair town used petroleum for fuel mostly. and a hint : A major use for petroleum products is fuel for cars, trucks, airplanes, trains, and other vehicles. The chemical used are usually a mixture of compounds containing several carbon atoms in a chain. When the material is ignited, a massive amount of gas is created almost instantaneously. This increase in volume will move the pistons in an internal combustion engine to provide power. A jet plane works on a similar principle. Air comes into the front of the engine and mixes with the jet fuel. This mixture is ignited and the gases formed create a lot of pressure to push the plane forward. The idea can be seen even more clearly in the case of a rocket launch. The ignition of the fuel (either solid-state or liquid) creates gases produced under great pressure that pushes the rocket up. Please answer this question : Which town didn't use petroleum to make fuel for cars?
****
[A]: Big

[Q]: You are given a new situation: John was studying the characteristics of tropical forests. For that, he chose forests in Laos. To compare the forests in Laos with the temperate zone forests he chose forests in Ireland. He could clearly see that how they differed in important ways. and a hint : Tropical forests (rainforests) receive more insolation and rainfall over longer growing seasons than any other environment on earth. With these elevated temperatures, insolation and rainfall, biomass is extremely productive leading to the production of as much as 800 grams of carbon per square meter per year. Higher temperatures and larger amounts of water contribute to higher rates of chemical weathering. Increased rates of decomposition cause smaller amounts of fulvic acid to percolate and leach metals from the zone of active weathering. Thus, in stark contrast to soil in forests, tropical forests have little to no podzolization and therefore do not have marked visual and chemical contrasts with the soil layers. Instead, the mobile metals Mg, Fe and Al are precipitated as oxide minerals giving the soil a rusty red color. Please answer this question : Would forests in Laos produce less or more biomass than forests in Ireland?
****
[A]: more

[Q]: You are given a new situation: Two groups of people followed different diets. Group A was comprised of vegans, while group B had a regular diet, with the mention they ate a lots of fatty foods and fast-food. and a hint : Although some lipids in the diet are essential, excess dietary lipids can be harmful. Because lipids are very high in energy, eating too many may lead to unhealthy weight gain. A high-fat diet may also increase lipid levels in the blood. This, in turn, can increase the risk for health problems such as cardiovascular disease. The dietary lipids of most concern are saturated fatty acids, trans fats, and cholesterol. For example, cholesterol is the lipid mainly responsible for narrowing arteries and causing the disease atherosclerosis. Please answer this question : Which group consumed fewer saturated fatty acids?
****
[A]:
Group A