________ is a precise way to measure a variable.
a. Reliability
b. Validity
c. The hypothesis
d. An operational definition
Question 2
Sarah stopped at the supermarket to quickly pick up some milk, bread, cat litter, and a tomato. When she saw the total come up on the screen, she swore that it was a dollar higher than it should be.
But no, the prices were all correct on her receipt. It was just that they had all gone up. So had the cost of clothing, cars, and most everything else. This is called a. the gold standard.
b. inflation.
c. increased purchasing power of the dollar.
d. stored value.
Testing the reducing atmosphere hypothesis for the origin of life - the Miller and Urey experiment.
The deep-sea vent hypothesis for the origin of life
Thread pitch gauge used to measure the pitch of the thread. This bolt has 13 threads to the inch.
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Separation of variable number tandem repeat (VNTR) alleles after PCR amplification