Answer: If you repeat an experiment multiple times, you get better, thorough, answers.
Explanation: Rather than Billy doing it once, he should have done it multiple times to get the results he needed. Especially with science, there are a lot of mistakes and things we can’t control: It is very important that we try over and over again. The wind, the time, the angle, anything can affect and ruin data. But, if we continue to gather it and be precise as possible, the results won’t always be 100% inaccurate and can at least be estimated upon.
Unrealistic=lifelike
Pessimistic=hopeful
Conventional=imaginative
Old fashioned=modern
Intolerant=welcoming
Open-minded=unreceptive
Kennedy most likely uses the clause "beachhead of cooperation may push back the jungle of suspicion," to convey the following idea:<span> Cooperation is the first step in lessening misunderstanding between adversarial nations. I think he means that cooperation between nations say in combatting a serious disease like ebola in modern times can bring people from different nations together ie those who are volunteering to combat the disease, say and with those they are treating to show that the volunteers are only there to help the afflicted people such as the Cuban doctors do in response to earthquakes, hurricanes etc.</span>