Given the background: Rain dissolves fertilizer in the soil. Runoff carries it away. The fertilizer ends up in bodies of water, from ponds to oceans. Nitrogen is a fertilizer in the water. Since there is a lot of nitrogen, it causes algae to grow out of control. Pictured below is a pond covered with algae ( Figure below ). Algae use up carbon dioxide in the water. After the algae die, decomposers break down the dead tissue. The decomposers use up all the oxygen in the water. This creates a dead zone. A dead zone is an area in a body of water where nothing grows because there is too little oxygen. There is a large dead zone in the Gulf of Mexico ( Figure below ). The U.S. states outlined on the map have rivers that drain into the Gulf of Mexico. The rivers drain vast agricultural lands. The water carries fertilizer from these areas into the Gulf. and the situation: Greg is studying the environmental impact of agriculture. He noticed that in his own state a lake near agricultural lands has been declared as a dead zone. For his study Greg labeled this zone as zone A. Then he found near a national park in his state a lake is not declared as a dead zone. To further his study he labeled this zone as zone B. Answer the following question: Would zone B see less or more organisms than zone A?
Ans: more

Given the background: Temperature is a measure of the average kinetic energy of the particles in matter. In everyday usage, temperature indicates a measure of how hot or cold an object is. Temperature is an important parameter in chemistry. When a substance changes from solid to liquid, it is because there was an increase in the temperature of the material. Chemical reactions usually proceed faster if the temperature is increased. Many unstable materials (such as enzymes) will be viable longer at lower temperatures. and the situation: Alexander is conducting reactions in his college chemistry class. In his first reaction, reaction A, he uses a high strength burner so the temperature of the reaction is high. In the second reaction, reaction B, he uses a weaker model of burner, so the temperature of the reaction is low. Answer the following question: Which reaction will proceed slower?
Ans: reaction B

Given the background: The body's second line of defense against pathogens includes the inflammatory response. If bacteria enter the skin through a scrape, the area may become red, warm, and painful. These are signs of inflammation. Inflammation is one way the body reacts to infections or injuries. Inflammation is caused by chemicals that are released when skin or other tissues are damaged. The chemicals cause nearby blood vessels to dilate, or expand. This increases blood flow to the damaged area, which makes the area red and slightly warm. The chemicals also attract white blood cells called neutrophils to the wound and cause them to leak out of blood vessels into the damaged tissue. and the situation: A team of researchers named Alpha did some research on the inflammatory response in humans for a science contest. A competing team called Omega did research on the human genome. Team Omega lost. Answer the following question: Which team studied more about signs of inflammation?
Ans: Alpha

Given the background: There is an evolution in tennis training that employs the use of low compression balls and in some cases modified court sizes. Organizations around the world have begun to use lower compression balls and modified court sizes as a way to reach out to younger tennis players interested in tennis. The use of low compression balls and modified court sizes is meant to ease the process into becoming a competitive or amateur tennis player. The low compression balls are colored differently to indicate the level of compression. Young players and beginners are likely to find the game easier to learn because the balls do not bounce as high or travel as fast as "normal" balls. The modified smaller courts make covering the court, or reaching the opponents shot, easier as well. and the situation: Jordan and his brother William are going to a special school for learning tennis. When they arrive the instructor asks each of them what level they believe they are as players. William has attended tournaments in the past so he believes himself to be competitive. Jordan on the other hand is just learning so he says he is an amateur. The instructor then hands each of them a tube of tennis balls. William gets a tube of normal tennis balls. Jordan gets a tube of tennis balls that are colored slightly different and labeled "low compression". They practice side by side and Jordan notices that when he hits his tennis balls they do not bounce as high or as fast as Williams normal tennis balls. He ask William if he can try one of his and the balls bounce much higher and faster. Answer the following question: Given the same amount of force, will hitting a low compression tennis ball bounce lower of higher than a normal tennis ball.
Ans: lower