To be useful to scientists, a hypothesis must be ________; in other words, the hypothesis must be able to be confirmed or discredited
Fill in the blank with correct word.
Answer: testable
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Skeletal muscle H zones are composed of ____
a. discs to which thin filaments are anchored b. stacked thick filaments along with the parts of thin filaments that overlap both ends c. thin filaments but no thick filaments d. thick filaments but no thin filaments e. stacked thin filaments along with parts of thick filaments that overlap both ends
A description of a flowering plant's ____ would include its soil, water, light, and pollinator requirements
a. habitat b. community c. ecosystem d. niche e. living requirements
Overall, water movement from the soil, through plant tissues, and finally to the atmosphere through transpiration, is driven by a gradient of
A) water potential. B) osmotic pressure. C) water temperature. D) specific leaf area.
Guppies from Trinidad form two distinct populations that differ in several life history traits. These traits appear to relate to the local predator populations, pike-cichlids or killifish. Which experiments would best test the heritability of these
traits? A) Raise both populations with cichlids to see if the population of smaller, faster-maturing guppies reproduces more quickly. B) Raise both populations without predators to see if they maintain their life history traits. C) Introduce cichlids into a habitat with killifish. D) Provide additional food to the guppies from cichlid habitats to see if they will grow to the same size as guppies from the killifish habitat.