Question

Which of the following is an example of how a scientist might use a model?

A. The end of a slinky is moved vertically up and down to simulate a wave
B. A wrench is used to tighten a nut onto a piece of wood
C. Stopwatches measure the amount of time it takes for runners to complete a mile
D. Microscopes are used to magnify a group of cells on sets of slides

Answer 1

D Microscopes

because they use them for DNA

a,b,and c, all you an item that can be used and not tested with.