When human subjects are used during drug tests, researchers usually perform double-blind experiments. in double-blind experiments, neither the researchers nor the human subjects know which subjects are receiving the actual drug (experimental group) and which are instead receiving an inactive placebo (control group). double-blind experiments are conducted in order to a. decrease the accuracy of the data. b. reduce measurement errors. c. reduce sources of bias. d. improve the precision of the data.

The correct option is option C which is to reduce source of bias.

its been noted for the past decade or so that there is some (approximately 5% to 7%) shrinkage in the brains of people who have schizophrenia, most notably in the gray matter, which is an important part structures in the brain’s amygdala, hippocampus and parahippocampus, which are all involved in memory storage and retrieval memory storage and retrieval.

explanation:

ive read articles

passive transport is a movement of biochemicals and other atomic or molecular substances across cell membranes without need of energy input. unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

so, according to what that says, i believe it's hypertonic and hypotonic.

good luck!