Which of the following is an example of how a scientist might use a model?
question 5 options:
stopwatches measure the amount of time it takes for a swimmer to go one lap in the pool.
a saw is used to cut a board in half.
marbles placed inside a hollow sphere are used to describe protons in a nucleus.
a telescope is used to see the moons orbiting jupiter.

Sarah and john are having a discussion on genetic diversity. sarah believes that it happen over a long period of time. john it happens immediately. who is correct? a. sarah is correct because genetic diversity occurs over a long period of time. b. john is correct because genetic diversity occurs immediately. c. both are correct because genetic variation can occur or long period of time. d. neither are correct because genetic diversity occurs over any period of time

Construct at least two possible hypotheses for the student’s experiment.

What is a dendrite and what does it do?