Which of the following is an example of an observation? a. how much light is needed for plants to grow taller. b. if the speed of a car increases, then it will require more distance to stop. c. based on evidence gathered, i find that movie ticket sales increase steadily until 10 pm, and then decrease for the remember of the evening. d. the width of the rock is 7.6 cm

a researcher conducts an experiment on the secretion of a particular hormone in mice. scientists inject mice with a substance that stimulates the production of the hormone. the scientists then test the levels of hormones produced by the mice. the tool used to measure the hormones consistently detects the levels at 10 points lower than the actual hormone levels in the mice. this tool makes measurements, but the measurements aren't .

explanation:

no u