PDF chapter test TRY NOW
Scientists say the chemicals
In the dust they leave behind,
Could have started life on the earth
Which resulted in mankind.
In the dust they leave behind,
Could have started life on the earth
Which resulted in mankind.
Explanation:
In the fifth stanza, the speaker looks at comets not as destroyers but as creators. Several scientists assert that a comet's role in creating life forms on earth was crucial.
Studies claim that the chemicals in the dust that the comets left behind could have started life on earth, eventually leading to the evolution of human beings.
According to the researches, "impacts from comets played a major role in the evolution of the earth, primarily during its early history billions of years ago. Some believe that they brought water and a variety of organic molecules to earth."*
The shock waves generated when comets collided with the early earth may have aided in generating amino acids and other essential building blocks of life. Comets, which are made up of dust, ice, and compressed gases, are also known to include tiny molecules like carbon dioxide, ammonia, and methanol, which support bacterial growth. Also, "comets may incubate and transfer microbial life from one cosmic habitat to another in the galaxy"**.
So, as the speaker pointed out, various studies prove that comets could have brought life to earth.
Studies claim that the chemicals in the dust that the comets left behind could have started life on earth, eventually leading to the evolution of human beings.
According to the researches, "impacts from comets played a major role in the evolution of the earth, primarily during its early history billions of years ago. Some believe that they brought water and a variety of organic molecules to earth."*
The shock waves generated when comets collided with the early earth may have aided in generating amino acids and other essential building blocks of life. Comets, which are made up of dust, ice, and compressed gases, are also known to include tiny molecules like carbon dioxide, ammonia, and methanol, which support bacterial growth. Also, "comets may incubate and transfer microbial life from one cosmic habitat to another in the galaxy"**.
So, as the speaker pointed out, various studies prove that comets could have brought life to earth.
Meanings of difficult words:
S.No | Words | Meanings |
1 | Mankind | Human beings considered collectively; the human race |
2 | Evolution | The process by which different kinds of living organism are believed to have developed from earlier forms during the history of the earth; the gradual development of something |
3 | Impact | The action of one object coming forcibly into contact with another |
4 | Organic | Relating to or derived from living matter |
5 | Molecule | The smallest particle in a chemical element or compound which can retain the composition and chemical properties of that substance |
6 | Collide | To hit by accident when moving |
7 | Incubate | To maintain (something, such as an embryo or a chemically active system) under conditions favorable for hatching, development, or reaction |
8 | Cosmic | Relating to the universe or cosmos, especially as distinct from the earth |
9 | Habitat | The natural home or environment of an animal, plant, or other organism |
10 | Galaxy | A system of millions or billions of stars, together with gas and dust, held together by gravitational attraction |
Reference:
State Council of Educational Research and Training (2019). Term-3 English Standard-9. The Comet- Norman Littleford (pp. 95). Published by the Tamil Nadu Textbook and Educational Services Corporation.
Register for free to see more content