If intake of potassium for an individual is less than the Estimated Average Requirement (EAR), is it true that this individual is at increased risk for potassium deficiency? A. Yes, because the EAR estimates the needs of >99 percent of individuals in a life-stage and gender group
B. No, because even though the EAR estimates needs of only 50 percent of individuals in a life-stage and gender group, all of us have individual requirements for nutrients
C. Yes, because the EAR is set at the lowest level that should be attained by all individuals in a life-stage and gender group
D. Yes, because EAR values are set at two standard deviations below the minimum suggested intake for 98-99 percent of a life-stage and gender group

to prevent people from getting the ebola virus, countries around the world paid to doctors develop a new vaccine. now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

what is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the ebola vaccine?

meditation is a practice of sitting still and quiet for minutes or even hours. it has been practiced for thousands of years and is even a part of religious practices for some people. carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that people connect with their current surroundings and activities.

are claims about the effects of meditation most likely scientific or pseudoscientific?

not pseudoscientific, because people have made claims about it but scientific observations have not been made