Question

7.18) which of these best describes a claim? a. a statement that expresses an idea or belief b. a statement that cannot be supported by evidence c. a tag placed on your luggage at the airport d. a musical instrument 7.19) what is the scientific method? a. a way for scientists to communicate their findings b. a way of gathering and analyzing data to support a hypothesis c. a way to avoid scientists judgments d. a way for scientists to make predictions without evidence 7.20) what are the different claims that scientists have about why zebras have stripes? a. zebras have stripes to stay cool, to avoid fly bites, and to confuse predators. b. zebras have stripes to stay cool, to avoid predators, and to attract mates. c. zebras have stripes to confuse predators, to stay warm, and to avoid being trampled by other zebras. d. zebras have stripes to avoid fly bites, to blend in with their surroundings, and to protect their young.

Explanation:

For 7.18, a claim is an idea or belief expressed as a statement and supported by evidence. For 7.19, the scientific method is about gathering and analyzing data to support a hypothesis. For 7.20, common claims about zebra stripes include staying cool, avoiding fly - bites, and confusing predators.

Answer:

7.18) A. a statement that expresses an idea or belief and is supported by evidence
7.19) A. a way for scientists to gather and analyzing data to support a hypothesis
7.20) A. Zebras have stripes to stay cool, to avoid fly bites, and to confuse predators.