You are given a background paragraph that describes one or more causal or qualitative relationships such as a relationship in economics or a scientific law and a story that makes use of the concepts or the relationship described in the provided paragraph. You are also given a question about the story that requires an understanding of the relationship described in the background paragraph and the story. You need to come up with an answer to the given question; the answer will be a span from either the question or the story. In order to correctly answer the given question, you need to understand the relationship mentioned in the background paragraph and should be able to use it to understand that in the story. Your answer can not consist of any word that is not mentioned in any of these: the background paragraph, the story, or the question. You can directly copy and paste a span from the story or the question while answering the given question.

Q: Background Paragraph: Like water in the ocean, air in the atmosphere exerts pressure that increases with depth. Most gas molecules in the atmosphere are pulled close to Earth’s surface by gravity. As a result, air pressure decreases quickly at lower altitudes and then more slowly at higher altitudes. This is illustrated in Figure below . Air pressure is greatest at sea level, where the depth of the atmosphere is greatest. At higher altitudes, the pressure is less because the depth of the atmosphere is less. For example, on top of Mount Everest, the tallest mountain on Earth, air pressure is only about one-third of the pressure at sea level. At such high altitudes, low air pressure makes it hard to breathe and is dangerous to human health. 
Story: Robert and his brother Timothy are both marathon runners. As marathon running is an endurance event, a key component is being able to replenish your oxygen supply by taking frequent breaths. This week, Robert is running a marathon in Colorado, which has low air pressures. Timothy is  also running a marathon, but he is running in Florida, which has high air pressures. 
Question: Who will have less difficulty in keeping a steady supply of oxygen during their marathon?

A: Timothy.
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Q: Background Paragraph: In exercises such as weight lifting, skeletal muscle contracts against a resisting force (see Figure below ). Using skeletal muscle in this way increases its size and strength. In exercises such as running, the cardiac muscle contracts faster and the heart pumps more blood. Using cardiac muscle in this way increases its strength and efficiency. Continued exercise is necessary to maintain bigger, stronger muscles. If you don’t use a muscle, it will get smaller and weaker—so use it or lose it. 
Story: Phillip just came home to his apartment after taking a long, vigorous bike ride. He enters the front door to find his roommate, Brandon, sitting on the couch playing videogames and eating potato chips. Phillip tells Brandon that if he keeps being so lazy and snacking so much he's going to start looking chubby. Brandon just waves Phillip off and goes back to his game. 
Question: Are Phillip's cardiac muscles increasing or decreasing in strength?

A: increasing.
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Q: Background Paragraph: Organisms can use different strategies to increase their reproduction rate. Altricial organisms are helpless at birth, and their parents give them a lot of care. This care is often seen in bird species. ( Figure below ). Altricial birds are usually born blind and without feathers. Compared to precocial organisms, altricial organisms have a longer period of development before they reach maturity. Precocial organisms, such as the geese shown below, can take care of themselves at birth and do not require help from their parents ( Figure below ). In order to reproduce as much as possible, altricial and precocial organisms must use very different strategies. 
Story: Mary's dog just gave birth to a litter of puppies! As of right now the puppies eyes are closed so they can't see. They require the mother to take very close care of them while they grow to keep them safe. 
Question: Will a precocial animal require more care or less care from it's parents?

A:
less.
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