47. This drug was once used as an anesthetic, or pain killer for large animals 1 point
and is one of the most dangerous drugs causing some people to become
schizophrenic.

Phencyclidine was used for a time as an animal anesthetic, but even this use has ceased in the United States.

Explanation:It is no longer manufactured in the United States for any clinical use, although it continues to be investigated for possible beneficial effects. PCP has been studied in animal models of schizophrenia

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