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                 requires vitamin D for absorption.

A diet high in              increases absorption of calcium, but increases loss of calcium in the urine.

Eating high amounts of sodium                reabsorption of water in the kidneys, which             blood pressure.

Ghrelin is a hormone released by the stomach to                       .

               is a vital component found in DNA and RNA.

There is a new drug on the market known as “Cheese.” It produces similar effects to heroin, but users swallow the drug rather than inject or smoke the substance like they do with heroin. Based on this information, what can we conclude about Cheese’s addictive potential?

If the design of an experiment allows the research to determine causality between two variables, that experiment is said to have good _______ .

Which drug has a greater negative effect on public health than all other psychoactive drugs combined?

Which of the following would help combat the symptoms of Parkinson’s disease?

Random assignment is an important part of an experiment because it: