Fact 1: The vanes rotating in an electric fan causes air to move. Fact 2: Fans move air, providing a cooling breeze. Given the two facts above, what is provided by vanes rotating in an electric fan?
OPTIONS:
- heat energy
- cool breezes
- torrential rains
- Animal survival
- kinetic energy
- loud storms
- energy
- hot winds
cool breezes
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Fact 1: Gene flow occurs when individuals move into or out of a population. Fact 2: Gene flow tends to decrease differentiation. Given the two facts above, what tends to occur when individuals move in and out of a population?
OPTIONS:
- By wind and rain
- permineralization
- The bending of a ray of light
- Something with a head, thorax, and abdomen
- a decrease in differentiation
- competing for resources
- barks and snarls
- metabolic reaction
a decrease in differentiation
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Fact 1: Hair is a fiber that is found only in mammals. Fact 2: Bats have hair like all mammals so they can stay warm. Given the two facts above, what keeps mammals warm?
OPTIONS:
- fibers
- eyeballs
- white blood cells
- fur
- the skin
- sweating
- nostrils
- heat
fibers
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Fact 1: Flowers produce spores that develop into gametophytes. Fact 2: Because ferns lack flowers and seeds, they reproduce through spores. Given the two facts above, what do ferns reproduce with?
OPTIONS:
- pollen
- heat
- a cuticle
- sunlight
- alleles
- spores
- chemicals
- bushes
spores
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