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How would the composition of the earth's atmosphere change if green plants and other autotrophs dissapeared?
Wiki User
∙ 14y ago
If just the autotrophs in the ocean disappeared most life on earth (including all humans) would be dead in less than a year. Current analysis of this was touched on in the movie Sahara, where toxic waste threatened the worlds oceans autotrophs that prediction was 6 months. The truth is most likely 12 to 18 months simply vulnerable species would die first reducing oxygen consumption. The flip side is: how much oxygen is needed for decomposition? The actual time line is pointless as for this is a positive feedback process that once initiated on a global scale would accelerate to a complete anoxic environment.
Wiki User
∙ 14y ago
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Does the composition of the ice change when it melts?
The composition of ice is H2O, and once it melts to water, its composition is ... H2O! So, no, the composition does not change.
What happens to the composition of matter when matter undergoes a chemical change?
A chemical change involve a change of composition.
What is the relationship between producers and autotrophs?
Autotrophs create their own food (for example plants). These get eaten by primary consumers (herbivores) - which are then eaten by secondary consumers (carnivores). Therefore autotrophs are the original source of food for carnivores.
What change to a material does not change its composition?
physical change
How does a chemical change differ. from a physical change?
A physical change is different than a chemical change, because in a physical change, the composition of the matter did not change. While in a chemical change, the composition of the matter did change.SO basically, the composition of the matter does not change is the difference between a physical change and a chemical change.yes
How does the composition of gases change as you go higher into the atmosphere?
>>>>>...YOU CAN't breath
What caused a major change in the composition of Earths atmosphere?
The appearance of photosynthetic organisms
Does composition of the atmosphere change with elevation?
The atmosphere gos through many cycles and changes. The significant gases in our atmosphere have not changed substantially in the past several centuries. The primary gas is still Nitrogen, then Oxygen.
What process caused the atmosphere's composition to change so much?
Burning fossil fuel releases carbon dioxide, a greenhouse gas which is building up in the atmosphere.
How does the composition of gas change as you travel up through Earth's atmosphere?
The pressure and the temperature would go on increasing .
How did the earths atmosphere change composition to become todays nitrogen and oxygen atmosphere?
your question is... How did the Earth`s atmosphere change composotion to became today`s nitrogen and oxygen atmosphere? Answer: it happend with the help of solar untraviolet (uv) radiation,the very thing what we worry about now for its cancer-causing ability
Does the composition of the ice change when it melts?
The composition of ice is H2O, and once it melts to water, its composition is ... H2O! So, no, the composition does not change.
What might happen if the composition of the air changed over time?
The composition of the Earth's atmosphere (air) has changed over geological time. This change has been brought about by biological processes (life). The planets air is therefore part of the biosphere and any change in the air will be accompanied by biospheric changes.
Organisms that change the energy in sunlight into food are called?
Organisms that produce their own food are called autotrophs. All plants are autotrophs and use photosynthesis to create their food.
How does the CompositIon oF the earths atmosphere change as you Travel up?
As the gases go higher in the atmosphere they start to compose or join together at some point which causes them to change since there is mixture of more than one gas, sometimes they form a different element when certain gases form
How does the composition of gases change as you travel up the atmosphere?
As the gases go higher in the atmosphere they start to compose or join together at some point which causes them to change since there is mixture of more than one gas, sometimes they form a different element when certain gases form
What are the organisms that change energy from sunlight to chemical energy?
Autotrophs (plants).
