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What step caused an aerobic atmosphere during the history of earth?
The origin of photosynthetic prokaryotes caused an aerobic atmosphere during the history of the earth.
How the plants come in earth?
The ancestor of plant is from ancestor prokaryote and after engulfed and undergone symbiotic relationship with aerobic heterotrophic prokaryote and photosynthetic prokaryote it become plant on the 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 type of organisms first appeared on earth?
Earth's first organisms were the Single- Celled organismsBacteriaFungiAnd Protozoa
What volcanic process formed Earth's atmosphere?
Volcanoes expel gases with chemical compositions which closely match the ratios of non-photosynthetic gases in air.
The oxygen content in the atmosphere of the early Earth is thought to have increased significantly once which developed -Mitochondria - Photosynthetic bacteria - Amino acids - Archaebacteria?
Photosynthetic bacteria
What Were the first living things on earth photosynthetic?
Bacteria
How did photosynthetic bacteria begin to change the earth 3.5 million years ago?
it was been an axiode and there was no plants before and when a plat grow it changes the oxygen and we game because of it
How did photosynthetic bacteria begin to change earth 3.5 million years ago?
it was been an axiode and there was no plants before and when a plat grow it changes the oxygen and we game because of it
What was earth's first life form?
Earths first life form may be non photosynthetic bacteria.
How did bacteria change early earths atmosphere?
Earth's early atmosphere was primarily composed of carbon dioxide. Early bacteria used carbon dioxide as a source of fuel and as a result produced oxygen.
Which is the correct order of organisms in terms of their appearance on Earth?
bacteria, trilobites, lizards, rhinoceros
What were the first organisms to form on early earth?
bacteria
Why did photosynthetic plants not yet exist the early atmosphere of Earth?
Because there was almost no free oxygen for the plants to photosynthesize with.
Where does 80 percent of Earth's photosynthetic activity happen?
Photosynthesis takes place wherever there plants, algae, or photosynthetic bacteria and sunlight. More than 50% of the total planetary photosynthesis is believed to take place in the oceans where there are massive numbers of photosynthetic plankton, algae and bacteria. Although land based plants are important, they do not do as much photosynthesis as the ocean-based organisms.
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.
How did the atmosphere become full of oxygen?
Around when the planet was cool enough for liquid water, life was supposedly first formed small photosynthetic bacteria took in the CO2 the early earth was releasing to form oxygen. Cera several hundred million years to a billion years later, the earth had accumilated around the same amount of oxygen the earth has now. It has remained fairly close to this level by both multicellular plants and single celled photosynthtic bacteria.
