on what layer of the earth does life exist?

Answer 1

Technically, lithosphere. Atmosphere is another layer with life in it. The answer is NOT biosphere, which describes all life but is NOT a layer of the earth.

Answer 2

Actually most of the answers are incorrect. Sorry guys. First of all, not the crust. The crust itself is the lithosphere...litho-is from the Greek for "rocky"- is the solid outermost shell of a rocky planet. Giving you exact def. there. So life itself is not in the rocks, I mean if you're taking about life in general, that's different. Obviously there exists bacteria and organisms that can sustain life in places hotter than we can imagine; geysers and volcanoes but not in the CRUST. There exists fossil remains, that's where fossil fuels and other resources come from, but not living organisms.

There is life in the ozone layer. The ozone layer is a section of the atmosphere;to house enough oxygen for life to exist. The atmosphere has NO definite boundaries...so saying that going below these imaginery lines is incorrect. Birds soar high in the sky and we are able to fly in airplanes. True, we are not renting condo's 1000's of feet about the earth, but we are able to travel upwards.

BUTTTTTT.....the area where life exists more than any at the atmosphere is the hydrosphere. It covers more than 71% of the earth, reaching depths greater than Mt. Everest. Here's proof: "...most life on the planet exists in the salt water oceans, humans are particularly interested in the hydrosphere because it provides the fresh water we depend upon." What more can you ask for ;)




Thanks mountaingym for partially agreeing with me. Except that you are also partly incorrect. The biosphere, only until recently was considered the only category of life-dwelling organisms. After decades of scientists specializing modern science the more accepted definition is that the biosphere is but one of four separate components of the geochemical model. So that's what I'm basing my answer on. There is no way for scientists to measure the scale of the "biosphere" so they have chosen to count the biomass through the hydrosphere, atmosphere, and lithosphere. If going by your answer then you're forgetting that the biosphere does not mean only the hydrosphere and atmosphere...it includes ALL living matter....from the depths of the earth. Thus including the lithosphere.

Answer 3

Although Go CHARGERS! had the most correct answer, it still isn't right. Life on Earth exists in the Biosphere. These are the fluid layers (hydrosphere and atmosphere) above the lithosphere.

Answer 4

Actually you will find life in all layers of the earth: lithosphere, hydrosphere, atmosphere. Of course, beyond some certain heights and depths life will no longer be present.

Answer 5

The Atmos. We exist in the Atmospheric Layer, go below Atmos and no air to breathe, go above Atmos same result. This is the layer that supports Human life.

Answer 6

The Crust

Answer 7

according to my opinion the answer is crust sir

Answer 8

crust

Answer 9

the crust, dude.