Q: I read this background article the other day: Saturated hydrocarbons are given the general name of alkanes . The name of specific alkanes always ends in - ane . The first part of the name indicates how many carbon atoms each molecule of the alkane has. The smallest alkane is methane. It has just one carbon atom. The next largest is ethane, with two carbon atoms. The chemical formulas and properties of methane, ethane, and several other alkanes are listed in Table below . The boiling and melting points of alkanes are determined mainly by the number of carbon atoms they have. Alkanes with more carbon atoms generally have higher boiling and melting points.  I am facing a new situation today: Scientists are performing experiments on two different alkanes, Dipophane and Jothane. The scientists put each alkane into a beaker and begin heating each one at the same time to see which will melt first. During this experiment it is discovered that Dipophane melts before Jothane does.  Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Which alkane has less carbon atoms?
A: Dipophane

Q: I read this background article the other day: Air pollution is harmful to human beings and other living things. About 22 million people die from air pollution each year. Breathing polluted air increases the risk of developing lung diseases such as asthma and lung cancer. Breathing bad air also increases the chances of dying from other diseases. Children are most likely to be affected by air pollution. That’s because their lungs are still developing and growing. Children also take in more air for their size than adults do. Some air pollutants damage the environment as well as the health of living things. The type of damage depends on the pollutant. Air pollution can also harm the environment.  I am facing a new situation today: Tree city and Leaf city were the two biggest cities in Boulderland. Tree city burned lots of gas and other fossil fuels, while Leaf city was very protective towards its environment.  Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Which city caused less harm to human beings?
A: Leaf

Q: I read this background article the other day: Wildfire intensity increases during daytime hours. For example, burn rates of smoldering logs are up to five times greater during the day because of lower humidity, increased temperatures, and increased wind speeds. Sunlight warms the ground during the day and causes air currents to travel uphill, and downhill during the night as the land cools. Wildfires are fanned by these winds and often follow the air currents over hills and through valleys. United States wildfire operations revolve around a 24-hour fire day that begins at 10:00 a.m. because of the predictable increase in intensity resulting from the daytime warmth.  I am facing a new situation today: There is currently a wildfire in the city of Milton and another one in the city of Parth. These two cities are on opposite sides of the planet, but both wildfires are nearly identical in terms of scope and intensity. So, when it's daytime in Milton, it's nighttime in Parth. New firefighters in Milton are currently arriving at the scene of the fire as the sun beats down directly above them. They are getting instructions from their boss about what they need to do today and preparing themselves for a long day.  Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Are air currents in Milton traveling uphill or downhill?
A: uphill

Q: I read this background article the other day: The dangers of global warming are being increasingly studied by a wide global consortium of scientists. These scientists are increasingly concerned about the potential long-term effects of global warming on our natural environment and on the planet. Of particular concern is how climate change and global warming caused by anthropogenic, or human-made releases of greenhouse gases, most notably carbon dioxide, can act interactively, and have adverse effects upon the planet, its natural environment and humans' existence. It is clear the planet is warming, and warming rapidly. This is due to the greenhouse effect, which is caused by greenhouse gases, which trap heat inside the Earth's atmosphere because of their more complex molecular structure which allows them to vibrate and in turn trap heat and release it back towards the Earth. This warming is also responsible for the extinction of natural habitats, which in turn leads to a reduction in wildlife population.The most recent report from the Intergovernmental Panel on Climate Change (the group of the leading climate scientists in the world) concluded that the earth will warm anywhere from 2.7 to almost 11 degrees Fahrenheit (1.5 to 6 degrees Celsius) between 1990 and 2100.  I am facing a new situation today: Rob was evaluating two research studies on climate change, study A and study B. Study A explained how increased greenhouse gases would affect the climate. On the other hand, study B showed how decreased greenhouse gases would affect the climate. Rob found the studies very interesting.  Using the knowledge I acquired from the background article, how should I answer correctly the following question regarding my new situation: Would study B see less or more wildlife population than study A?
A:
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