He became the first African American golfer on the PGA Tour. It was not an easy feat. He was restricted to all-black golf tournaments before seeking his way to the
PGA. Once he broke down the barrier and made his way into the prestigious
event, he faced heavy criticism and backlash for his efforts, but it was he who
finally got the Tour to drop their “Caucasian Only" clause. He clearly paved the
way for future African American golfers. Who is he?

Charles Luther Sifford

Explanation:

He was the first African American to play on the PGA Tour. He won the Greater Hartford Open in 1967 and the Los Angeles Open in 1969.

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

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