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A geneticist for sure does not, so it is not all of the above.
An environmental chemist might
I know geologists for sure studies it.
There are four main Earth systems:
The area from the surface of the Earth down to it's center.
The blanket of gas that surrounds our planet.
All the water on the Earth. Including the water in the Atmosphere.
All organisms on Earth as well as the environments in which they live.
So a genetic scientist would study?
Genetics, aka DNA. What is DNA? It's what makes us who we are, so therefore a genetic scientist would be a Biologist.
BIOsphere = BIOlogist
A Geologist would belong to the Geosphere group.
GEOlogist = GEOsphere
Geosphere is the Earth, right? Where do soil and rocks come from? The EArth.
Therefore the answer is Geologist.
Thanks for clarifying, but I already knew the answer.
Just wanted to phrase like that to see if the original poster understands it.