Which of the following statements is true?

97% of the earth's water is fresh water.
30.1% of the earth's water is salt water.
97% of the earth's water is salt water.
0.3% of the earth's water is fresh water.

Select the correct answer. which scenario describes unethical lab behavior? a. danny stores the chemicals required for his experiment in flasks and beakers. b. anna publishes the results of her experiment on the growth rate of saplings. c. jason repeatedly runs an experiment until he gets the results he desires. d. mia records her observations of an experiment precisely and accurately. resetnext

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine

The image below shows a common blood pressure gauge. what does this device do? a. measures the level of oxygen present in the blood b. measures the pressure of blood when the lungs expand and compress c. measures the electrical activity of the heart d. measures the pressure of blood when the heart contracts and relaxes