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What molecule could not have been present in an early earth atmosphere and why?
Ozone (O3) could not have been present in an early Earth atmosphere because it is a product of oxygen reacting with ultraviolet radiation. Early Earth's atmosphere lacked the high levels of oxygen needed for ozone formation.
Can oxygen turn into gold?
No we would have been filthy rich if that happened
Why the candle could not burn when gas left in the jar?
When gas is left in the jar, it displaces the oxygen needed for the candle to burn. Oxygen is required for combustion to occur. Without enough oxygen present, the candle will not be able to sustain the flame and will extinguish.
Why is there oxygen in the air?
Oxygen is present in the air due to photosynthesis, where plants and algae use sunlight to convert carbon dioxide into oxygen. This process has been occurring for billions of years, continually replenishing the Earth's atmosphere with oxygen.
Has there always been oxygen in the air?
No, oxygen was not always present in the Earth's atmosphere. The oxygen we breathe today was produced by early photosynthetic organisms, like cyanobacteria, around 2.3 billion years ago. This event is known as the Great Oxidation Event.
How long has oxygen been fully present in the atmosphere?
500 million years
Did the primitive Earth have oxygen?
No. Oxygen is not believed to have been present in the early years of Earth's history.
Where was the Titanic's captain?
Captain Smith had been resting, but not retired because witnesses say that after the collision he was present almost right away and fully dressed.Captain Smith had been resting, but not retired because witnesses say that after the collision he was present almost right away and fully dressed.
What molecule could not have been present in an early earth atmosphere and why?
Ozone (O3) could not have been present in an early Earth atmosphere because it is a product of oxygen reacting with ultraviolet radiation. Early Earth's atmosphere lacked the high levels of oxygen needed for ozone formation.
Can oxygen turn into gold?
No we would have been filthy rich if that happened
Why the candle could not burn when gas left in the jar?
When gas is left in the jar, it displaces the oxygen needed for the candle to burn. Oxygen is required for combustion to occur. Without enough oxygen present, the candle will not be able to sustain the flame and will extinguish.
Why is there oxygen in the air?
Oxygen is present in the air due to photosynthesis, where plants and algae use sunlight to convert carbon dioxide into oxygen. This process has been occurring for billions of years, continually replenishing the Earth's atmosphere with oxygen.
What happen if there is no oxygen from the beginning?
There was no free oxygen when the earth began and when life began on the earth. Eventually single organisms developed in the oceans that released oxygen as part of their metabolic activity. After millions of years, enough free oxygen was present in the oceans and in the atmosphere to support the development of life that depended on oxygen.If there had never been any oxygen at all in the universe, the development of the planet earth would have been very different, since there would have been no oxygen to combine with hydrogen to form water, and life as we know it would never had developed.
Is have been a present participle?
No, "have been" is not a present participle. It is the present perfect tense of be. Being is the present participle of be.
How was your atmosphere and ozone created?
Oxygen is carried in the solar wind, but mostly oxygen is produced by surface plant life. Nitrogen was expected to have been part of the initial ancient atmosphere, and is non-reactive (and heavy) enough that it is still present. Ozone is made from oxygen and sunlight.
What is the present perfect tense of am?
Am is the present tense, first person singular conjugation of be. The present perfect tense of be is have/has been.
What is the present perfect tense for am?
I/you/we/they have been. He/she/it has been.
