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How have humans changed the atmosphere of the plants in the past 200 years?
Wiki User
∙ 6y ago
They have increased the levels of the greenhouse gases.
(Apex)
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How have rainforests changed over100 years?
in the last hundred years humans have changed the rainforest by reduce of deforestation and we have people looking after the enviorment
Oxygen was introduced into the atmosphere as a byproduct of?
The source of oxygen in the atmosphere is a complicate stellar process.
How have green plants and other organisms changed the composition of the Earths atmosphere?
Hugely. Before the evolution of the first organisms capable of photosynthesis around 3 billion years ago, the atmosphere of the early earth contained almost no Oxygen. By the conversion of Carbon Dioxide and Water into organic compounds and Oxygen through photosynthesis, cyanobacteria, and later algae and plants, have raised Oxygen levels to around 21% of the atmosphere today. Without this high level of Oxygen, the huge diversity of multi-cellular life depending on Oxygen for aerobic respiration would not exist.
How did the evolution of plants change the earth's atmosphere?
Plants take in Carbon dioxide for Photosynthesis. Thus, when the earths atmorphere was rich in Carbon Dioxide, the plants evolution caused the CO2 levels to fall and the oxygen levels to rise. (Apologies. To be correct, the 2 should be just below the O, but unfortunately, I don't know how) This made it possible for oxygen breathing animals to take to the land. (Mostly in the form of early amphibians)
How many years ago did large amounts of oxygen gas first appear on Earth's atmosphere?
After plants developed chlorophyll and multiplied to the point where they could "pollute" the primal atmosphere, somewhere between 1 and 2 billion years ago.
How have humans changed the atmosphere of the plant in the past years?
They have increased the levels of the greenhouse gases.(Apex)
How have humans changed the atmosphere of the planted in the past 200 years?
They have increased the levels of the greenhouse gases.(Apex)
How has life changed for humans in the past 300 years?
how has life changed in the last 300 years
How have rainforests changed over100 years?
in the last hundred years humans have changed the rainforest by reduce of deforestation and we have people looking after the enviorment
How have cinemas and theatres changed in the last 20 years?
the seating has changed the atmosphere & everything that you see now was all different back then
How has the atmosphere changed over the last 4.5 billion years?
Due to photosynthesising, single celled organisms, the atmosphere now has much more oxygen in it. this is possibly the most important change as with out we would exist. The atmosphere originally had much more carbon-dioxide and made the planet so hot humans would not be able to survive.
Why are humans concerned about removal of trees?
Because the atmosphere of the Earth is what it is largely as a result of millions of years of the existence of vast forests of trees and ... coincidentally and perhaps inconveniently ... humans depend on that atmosphere for breathing purposes.
How humans change the atmosphere of the planet in the past 200 years?
They have increased the levels of greenhouse gases.
What did plants and animals look like millions of years ago?
The Miocene period was a time of gradual cooling of regions into an ice age. Mammals, birds, grasslands and forests were present. Human kind evolved in this time. Kelp fields in the oceans led to ecosystems that supported many types of life.
Why do plants survive without humans?
Plants grew for millions and millions of years with no humans at all. Much, much later, humans learned to grow bigger and better plants for food . . . the tradeoff was that these better plants like wheat, rice, and strawberries became dependent on humans for water, fertilizer, and other care. But plants in general are similar to what they have always been, and are self-reliant.
How long will the air last?
If you mean our atmosphere, then it depends. If the population of animals does not increase dramatically and us humans "go greener", then the toxic chemicals in our atmosphere will lower and the atmosphere will stay healthy for millions of years. If we stay like we are now, polluting the atmosphere, then the air will get ruined within a few hundred years.
Why are plants efficient producers?
Photosynthesis is carried on by plants that produce oxygen.This process has replaced all oxygen that is in the atmosphere for more than 2 000 years.
