Given the background: What does popping bubble wrap have to do with science? Actually, it demonstrates an important scientific law, called Boyle's law. Like other laws in science, this law describes what always happens under certain conditions. Boyle's law is one of three well-known gas laws, which state the relationships among temperature, volume, and pressure of gases. (The other two gas laws are Charles' law and Amontons' law.) According to Boyle's law , if the temperature of a gas is held constant, then decreasing the volume of the gas increases its pressureand vice versa. That's what happens when you squeeze the bubbles of bubble wrap. You decrease the bubbles' volume, so the air pressure inside the bubbles increases until they pop. and the situation: Cindy is throwing a party. One of the games she decides to have is a balloon popping competition. In which people will try to pop as many balloons as they can and will win a prize. Her friend George pops the balloons by picking them up and squeezing. Her friend Meredith quickly grabs a balloon and throws her entire weight on it to quickly pop it. Answer the following question: Will the volume of the air in the balloon increase or decrease when more pressure is applied to it?
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Answer: decrease

Given the background: The major zones in river ecosystems are determined by the river bed's gradient or by the velocity of the current. Faster moving turbulent water typically contains greater concentrations of dissolved oxygen, which supports greater biodiversity than the slow moving water of pools. These distinctions form the basis for the division of rivers into upland and lowland rivers. The food base of streams within riparian forests is mostly derived from the trees, but wider streams and those that lack a canopy derive the majority of their food base from algae. Anadromous fish are also an important source of nutrients. Environmental threats to rivers include loss of water, dams, chemical pollution and introduced species. A dam produces negative effects that continue down the watershed. The most important negative effects are the reduction of spring flooding, which damages wetlands, and the retention of sediment, which leads to loss of deltaic wetlands. and the situation: Two rivers spring from the same mountain. Olt was a fast moving river, while Mures river was slow moving and deep. Both rivers are very important for the local economies. Answer the following question: Which river had a water that contains lower concentrations of dissolved oxygen?
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Answer: Mures

Given the background: Candied fruit, also known as crystallized fruit or glace fruit, has existed since the 14th century. Whole fruit, smaller pieces of fruit, or pieces of peel, are placed in heated sugar syrup, which absorbs the moisture from within the fruit and eventually preserves it. Depending on size and type of fruit, this process of preservation can take from several days to several months.[1] This process allows the fruit to retain its quality for a year.[2] The continual process of drenching the fruit in syrup causes the fruit to become saturated with sugar, preventing the growth of spoilage microorganisms due to the unfavourable osmotic pressure this creates.[3] and the situation: Helen got lots of different fruit as a gift from a friend that owned an orchard. She received apples, pears, apricots, peaches, plums, quince, among others. She decided to candy apples, apricots, and pears, and to keep the others fresh for as long as possible. Answer the following question: Which fruit lasted longer, pears or quince?
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Answer:
pears