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The biggest contributer was and is algae.
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When no animal and trees then how you will live on earth?
You wont... trees provide oxygen so we can breathe ( plants included) and animals -for some, provide food.
What conditions are necessary for life on Earth?
damien because he is a stupid American
What four human needs that will have an impact on Earth?
in any embryonic development, an embryo must have protection from the environment, a food source, a place for waste, and a source of oxygen
Can humans only live on earth?
No, it is not for only humans. It existed long before humans appeared and will exist long after we are gone; in that time, it has, is and will support hundreds of millions of other types of organism.
What food do you eat on earth day?
Food you usually eat.
How did early photosynthesis organisms change Earth's atmosphere?
Photosynthetic bacteria produced oxygen, and as they continued to colonize the earth they produced more oxygen. Eventually all the oxygen sinks became saturated, and this resulted in the Great Oxygenation Event (GOE). Aerobic organisms would late evolve and utilize the free oxygen.
Which process producer most of the oxygen in earth's atmosphere?
The process that produces most of the oxygen in Earths atmosphere is photosynthesis. Plants use this process to create food.
The abundance of oxygen in Earth's atmosphere is partly because of what?
The Process of Photosynthesis that plant use to produce energy food is responsible for a lot of oxygen being freed into the atmosphere.
Why do scientists think that oxygen accumulated in the earth's atmosphere?
Scientists thought that cells may have developed the ability to make their own food. As they made their own food, they produced oxygen as a waste product.
How did Earth's atmosphere get oxygen during the Precambrian time?
Cyanobacteria uses sunlight to make their own food. This process releases oxygen. Overtime, oxygen built upon the ocean and air.
Can identify the food sources of oxygen element?
Practically all foods contain oxygen; and the first is of course water. Also the Earth atmosphere contain approx. 20 % oxygen as a gas.
Why are phytoplankton critical to life earth?
They produce much of the oxygen in the earth's atmosphere that aerobic life requires, and they are at the base of the food chain in most marine environments
Why are phytoplankton critical to life on earth?
They produce much of the oxygen in the earth's atmosphere that aerobic life requires, and they are at the base of the food chain in most marine environments
Why is there oxygen in the earth's atmosphere?
The oxygen is the product of photosynthesis. Plants and algae use the energy of sunlight to turn water and carbon dioxide into sugar and oxygen. The plants use the sugar as food and turn some into cellulose to make cell walls. Oxygen is released into the atmosphere as a byproduct.
Why is there oxygen in Earth's atmosphere?
The oxygen is the product of photosynthesis. Plants and algae use the energy of sunlight to turn water and carbon dioxide into sugar and oxygen. The plants use the sugar as food and turn some into cellulose to make cell walls. Oxygen is released into the atmosphere as a byproduct.
What ecological goods and serviced does the atmosphere provide?
the four main food groupscandycandy canescandy cornsyrup
A gas from the atmosphere necessary for getting energy out of food?
oxygen
