Q: The earth is tilted on its what? Read this paragraph and choose the correct option from the provided answers: The Earth is tilted on its axis ( Figure above ). This means that as the Earth rotates, one hemisphere has longer days with shorter nights. At the same time the other hemisphere has shorter days and longer nights. For example, in the Northern hemisphere summer begins on June 21. On this date, the North Pole is pointed directly toward the Sun. This is the longest day and shortest night of the year in the Northern Hemisphere. The South Pole is pointed away from the Sun. This means that the Southern Hemisphere experiences its longest night and shortest day ( Figure below ). Choices: - top - compass - radius - axis A:
axis
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Q: What organ do mammals have that is exceptionally large for their body size? Read this paragraph and choose the correct option from the provided answers: Cerebral Cortex Compared to other vertebrates, mammals have exceptionally large brains for their body size. An entire alligator's brain, for example, would fill about one and a half teaspoons. This increase in brain to body size ratio is especially pronounced in apes, whales, and dolphins. While this increase in overall brain size doubtlessly played a role in the evolution of complex behaviors unique to mammals, it does not tell the whole story. Scientists have found a relationship between the relatively high surface area of the cortex and the intelligence and complex social behaviors exhibited by some mammals. This increased surface area is due, in part, to increased folding of the cortical sheet (more sulci and gyri). For example, a rat cortex is very smooth with very few sulci and gyri. Cat and sheep cortices have more sulci and gyri. Chimps, humans, and dolphins have even more. Choices: - lungs - heart - liver - brain A:
brain
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Q: The outer layer of what anatomical structure is so tough that it keeps out most pathogens? Read this paragraph and choose the correct option from the provided answers: This drawing shows that the skin has many layers. The outer layer is so tough that it keeps out most pathogens. Choices: - liver - steel - bark - skin A:
skin
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Q: During adulthood, what is needed for the production of sperm? Read this paragraph and choose the correct option from the provided answers: During adulthood, testosterone is needed for the production of sperm. Choices: - steroids - estrogen - androgen - testosterone A:
testosterone
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