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Did early producers change the atmosphere of the earth?
The Earth's atmosphere has gone through a number of changes in temperature and composition over the 4.5 billion years it has been around. From our point of view, the important change occurred when it became breathable by us (or other animals). That change almost killed everything else alive at the time since oxygen was poisonous to the first life forms on Earth. About 3 or 4 billion years ago, a bacteria-like life form discovered photosynthesis and gave off oxygen as a poisonous waste. This photosynthetic prokaryotic organisms that emitted O2 as a waste a precursor to what we now call blue-green alga. After more than a billion years of these bacteria-like things making oxygen, a life form evolved that was able to breath it. Soon after that, we arrived. Now that humans are hear, there are more temperature and chemistry changes to the atmosphere due to chemical we create that become pollutants and we are working on doubling the concentration of CO2 as a waste gas from burning coal and oil.
Earth's original atmosphere was made up mainly of water vapor carbon dioxide and .?
The Earth's early atmosphere consisted of Carrbon Dioxide, methane, sulphur, ammonia, nitrogen and smaller amounts (aprox. 0.05%) of other gases.
Which early sociologist applied the concept of evolution to societies in order to explain how they change or evolve over time?
Herbert Spencer was the early sociologist who applied the concept of evolution to societies.
Why do tornadoes occur late in the day?
Tornadoes can occur at any time of day but are most common in the late afternoon because that is when the lower atmosphere is generally warmest and thus when the atmosphere is most unstable. An unstable atmosphere is needed for thunderstorms and strong thunderstorms are needed for tornadoes. The greater the instability the stronger the thunderstorms can become.
What happened about 3.5 billion years ago dealing with science?
About 3.5 billion years ago, Earth saw the emergence of the earliest known life forms, specifically prokaryotic microorganisms, such as bacteria and archaea. These simple organisms are believed to have thrived in extreme environments, contributing to the planet's biosphere and influencing its atmosphere by producing oxygen through photosynthesis. This period marks a critical point in the history of life on Earth, setting the stage for the evolution of more complex organisms later on. Fossil evidence, such as stromatolites, supports this timeline of early life.
What gas was lacking from earths early atmosphere in the early precambrian?
oxygen
What gas was not part of early earths atmosphere?
oxygen
What gas was not a part of earths early atmosphere?
nitrogen
Was the earths early atmosphere made up of mostly oxygen?
no
What was the major contributor of oxygen to earths early atmosphere?
photosynthsis
When earths early atmosphere formed which gases where lost because earths gravity was too weak?
Hydrogen and helium
What is earths Precambrian atmosphere?
The Earth's Precambrian atmosphere was primarily composed of carbon dioxide, methane, ammonia, and water vapor. It lacked oxygen and had higher levels of greenhouse gases compared to the present atmosphere. This environment supported the evolution of early life forms such as bacteria and algae.
What factor contributed to the formation of earths early atmosphere?
energy from the sun,lightening,earths heat triggered chemical reaction for the early gases of the earth combined
What does gas do to some scientist think was missing from earths early atmosphere?
oxygen
What gas do scientist think was missing from earths early atmosphere?
Methane gas
What gas was not found in earths early atmosphere but was produced by photosynthesis?
Carbon dioxide
What molecule was not present in early Earths reducing atmosphere?
Oxygen (O2) was not present in early Earth's reducing atmosphere. It only became abundant in the atmosphere due to the photosynthetic activity of cyanobacteria and other early organisms.
