0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What are the two main reasons that an oxygen-rich atmosphere is important for life on Earth?
Oxygen in the atmosphere is important for life for two main reasons. First, oxygen makes up the ozone layer. The ozone layer is in the upper part of the atmosphere, and is made of O3 molecules-a particular type of oxygen molecule. It blocks harmful radiation from the sun and keeps it from reaching Earth's surface. Without an ozone layer, intense radiation from the sun reached the early Earth's surface, making life almost impossible. Secondly, oxygen in the atmosphere is necessary for animals, including humans, to breathe. No animals would have been able to breathe in Earth's early atmosphere.
Why is it impossible to show the earth on a flat surface?
it's not impossible. The reason we have longitude and latitude lines are so that we are able to see the earth on a flat surface.
Does earth shape life or life shapes earth?
Earth shapes life. Life has to adapt to the environment they find here on earth.
What is the heat source within the early earth?
which of the following was not a source of heat that caused the early earth to melt is?
What would happen if there was no gravitation on earth?
First, keep in mind that this situation is utterly impossible, since gravity is a characteristic of mass, and the earth is massive. That said, without gravity life on earth as we know it would end. There would be no atmosphere, no water, no animals or vegetation of any kind.
How did the primitive atmosphere differ from atmosphere today?
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
How the did primitive atmosphere differ from your atmosphere today?
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
How did the primitive atmosphere differ from the atmosphere today?
As opposed to today's atmosphere, the Earth's early atmosphere would have been quite impossible for human life to thrive in. Today the atmosphere consists primarily of Nitrogen, Oxygen, and Carbon Dioxide, but early Earth's first atmosphere was probably made of Hydrogen and Helium.
What was the first comet that hit earth?
Impossible to say. Comets have been striking the earth since before life evolved on the earth
Are there any quasars in the milky way?
No, thank goodness; otherwise life here on Earth would be impossible.
Why does oxygen occur naturally?
It is a byproduct of the life processes on Earth. Earth's early atmosphere contained no Oxygen, but Earth was slowly Terra-formed by life and obtained an Oxygen rich atmosphere.
Will the sun come to earth?
No. Not in the immediate future. It will eventually turn into a red giant and will make life on earth impossible but that will not happen for about 5 billion years.
What will happen to our sun when it uses all its energy?
IT will no longer porvide light, which would make life impossible on earth
Where did life evolve on Earth?
It evolved in the oceans....there probably is a specific ocean or part of an ocean but that would be impossible to locate.
How did early bacteria in the earths shallow seas contribute to the development of life on earth?
They PHOTOSYNTHESIZED
What would have happened if there was no life on earth?
Not a lot! Early life transformed the atmosphere; removing much of the carbon dioxide, so without life Earth would probably have an atmosphere and environment like Venus.
Why is saturns moon titan of so much interest to scientists studying the origins of life on earth?
Titan is like early earth.
