<span>When a scientist needs to <u>observe </u>they make observations. Observing is a fundamental part of scientific investigation. Observations of natural phenomenon lead scientists to ask questions, research and form a hypothesis. When the scientist sets up experiments to teat out their hypothesis again the scientists must use their observation skills to monitor their test and make sure there are no mistakes.</span>
Answer:
50 years
Explanation:
The first human spaceflight named Vostok 1 was launched on April 12, 1961. This spaceflight took along with it Yuri Gagarin, a Cosmonaut who came from the Soviet Union. Thus this scientist was the first to ever travel to space and enter into orbit.
The formal end of the space shuttle program was marked in August 31, 2011. The last shuttle, STS-135 that was flown by Atlantis was retired on July 2011. So the time duration between the first human spaceflight and the end of the space shuttle program spanned some 50 years.
Hi
On the other hand civic responsibilities are fulfilled by choice. They are voluntary. Civic duties include, for example, obeying the laws of the country, paying the taxes levied by the government, or serving on a jury or as a witness in court.
Hope this helps!
~CoCo
