Table of Contents
- 1 What is one reason that Earth is the only planet that contains life as we know it?
- 2 Why don t scientists know exactly how many species are on earth?
- 3 Which planet life is impossible?
- 4 How much of the earth is still undiscovered?
- 5 Why is Mars life impossible?
- 6 Why is life possible on the earth answer?
What is one reason that Earth is the only planet that contains life as we know it?
A special planet: the habitable Earth What makes the Earth habitable? It is the right distance from the Sun, it is protected from harmful solar radiation by its magnetic field, it is kept warm by an insulating atmosphere, and it has the right chemical ingredients for life, including water and carbon.
Why don t scientists know exactly how many species are on earth?
First, some areas of Earth, like the deepest ocean, remain relatively unexplored. Second, many species, such as bacteria and many fungi, are tiny and easily overlooked. Third, many organisms are extremely difficult to identify and tell apart from other species.
Which planet life is impossible?
However, the findings of the new study, based on data from several Venus probes, leave zero chance of anything living in the clouds of Venus, he said. “Living systems including microorganisms are composed mainly of water and without being hydrated, they can’t be active and are unable to proliferate,” Hallsworth said.
Why is life not possible on all planets answer Class 6?
Answer: The Earth is the only planet where conditions are favourable to support life. It is neither too hot nor too cold and thus have an optimum temperature to support human existence.
Why is life not possible on all plants?
Answer: In the absence of green plants, there would not be the process of photosynthesis. Besides oxygen which is essential for the survival of all living organisms is produced during photosynthesis. Thus, we can say that life would be impossible on the earth in the absence of photosynthesis.
How much of the earth is still undiscovered?
The extent of human impact on these underwater ecosystems is impressive. Still, we’ve only mapped 5 percent of the world’s seafloor in any detail. Excluding dry land, that leaves about 65 percent of the Earth unexplored.
Why is Mars life impossible?
This level of ionizing radiation is sterilizing for dormant life on the surface of Mars. Even the hardiest cells known could not possibly survive the cosmic radiation near the surface of Mars since Mars lost its protective magnetosphere and atmosphere.
Why is life possible on the earth answer?
Life exists only on earth because of the following reasons: Earth has all the basic necessities that are required for an organism to survive. The temperature and atmosphere of the earth makes life comfortable for the organism. Earth has enough amount of water, food and air for survival of living organisms.