Q: Altitude is height above what? Read this paragraph and choose the correct option from the provided answers: Altitude is height above sea level. The density of air decreases with height. There are two reasons. At higher altitudes, there is less air pushing down from above. Also, gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more. Air density decreases. You can see this in Figure below . Choices: - the earth's core - the earth's surface - the water table - sea level A:
sea level
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Q: What does the moving piston in an engine turn? Read this paragraph and choose the correct option from the provided answers: Choices: - hammer - muffler - brake - crankshaft A:
crankshaft
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Q: Cardiovascular disease, some types of cancer, type 2 diabetes, and obesity are considered what kind of preventable diseases? Read this paragraph and choose the correct option from the provided answers: Regular physical exercise is important in preventing lifestyle diseases such as cardiovascular disease, some types of cancer, type 2 diabetes, and obesity. Regular exercise also improves the health of the muscular system. Muscles that are exercised are bigger and stronger than muscles that are not exercised. Choices: - environmental diseases - atmosphere diseases - age diseases - lifestyle diseases A:
lifestyle diseases
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Q: What is the simplest life cycle? Read this paragraph and choose the correct option from the provided answers: The haploid life cycle ( Figure below ) is the simplest life cycle. It is found in many single-celled organisms. Organisms with a haploid life cycle spend the majority of their lives as haploid gametes. When the haploid gametes fuse, they form a diploid zygote. It quickly undergoes meiosis to produce more haploid gametes that repeat the life cycle. Choices: - diploid life cycle - binary life cycle - metamorphic cycle - haploid life cycle A:
haploid life cycle
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