Read the passage given below carefully and answer the questions that follow
1. For the last many decades, people have been mystified about the presence of aliens. Efforts have been
made to solve this puzzle because this will get us a step closer to discovering if Earth is the only planet to
support life. If is difficult to know if extraterrestrials exist, unless they get in touch with us or we find some
evidence of their existence. Scientists do not rule out the possibility of life in the form of bacteria or other
microorganisms, rather than intelligent human beings. But the search continues.
2. NASA captured images of Mars and they revealed that the Red Planet is somewhat like Earth—it is likely
to have had water at some point in its ancient history. Some stargazers claim to have seen aliens there.
However, scientists do not support these claims. It is believed that Mars was frozen once upon a time-a few
billion years ago. The surface of the planet melted, and this resulted in the creation of deep valleys and
canyons on its surface.
3. Scientists believe that there could be bacteria on Mars that bear resemblance to the simple microbes that
exist in the ice-bound lakes of Antarctica. Scientists believe like Earth, Mars too was struck by huge
asteroids, sending fragments of both these planets into space. Scientists think that the discovery of life on
Mars could help us understand how life first began on Earth.
4. Alfred McEwen, professor of Planetary Geology at the University of Arizona, said: the search for ancient
life on Mars may really be the search for the origin of life on Earth’. The samples collected by NASA’s
Mars Rovers have detected complex organic compounds on Mars. Professor McEwen feels life probably
still survives there in pockets below the surface where it would be warmer and that the microbes were
sheltered from cosmic radiation. This raises an interesting question-Did life originate on Earth and get
transported to Mars or was it the other way round?
Answer the following questions very briefly:
1. Why has there been a mystery surrounding aliens?
2. Why have scientists been trying to solve the mystery?
3. Why is it difficult for scientists to know the truth?
4. What kind of life do scientists expect on other planets?
5. Why is the possibility of life on Mars not ruled out?
6. What are the indications of water on Mars?
7. What is the similarity that the scientists see between Earth and Mars?
8. How will finding life on Mars help us?
Answers
Answer:
Yes
Explanation:
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Answer:
1) There is a mystery surronding aliens because that will get us a step closer to discovering if Earth is the only planet supporting life.
Explanation:
2) Scientist want to discover whether Earth is the only planet that supports life because scientist do not rule out the possibility of life in form of bacteria or other microorganisms,rather than intelligent human beings.
3) It difficult for the scientists to know the truth whether extraterrentials exist unless they get in touch with us or we find some evidence of their existence.
4) Scientist expect living organisms like bacteria or microorganisms even intelligent human beings.
5) Life on Mars cannot be ruled out because there could be bacteria in Mars that bear resemblance to simple microbes in Antarctica.
6) Indications of Water on Mars are:
- Mars was frozen once upon a time few billion years ago which melted forming deep valleys and canyons.
- NASA captured images of Mars which revealed it is much similar to Earth and is believed to have water at some point of time.
7 ) Similar microbes and images captured by NASA of Mars prooves it is similar to Earth.
8) Finding Life on Mars would help Scientist to understand how life originated on Earth.