During the early earth, when photosynthesis has not yet evolved, there were only negligible amounts of free oxygen in the atmosphere. It was said that the Earth's atmosphere had no free oxygen then. This is about 3.5 billion years ago.
New `x` New `y`
`6` `4`
`8` `4`
`8` `5`
`7` `5`
`7` `7`
`6` `7`
you can also just search up the question for the answer
Answer:
fault creep
Explanation:
A type of continuous, snail-like rock movement that occurs along parts of the San Andreas Fault is called fault creep
Answer:
C
Explanation:
Roads can vary in elevation, since a road is essentially any path to walk on.
Hills have varying elevations - they are higher at certain points.
Rivers can flow downhill and aren't always at equal elevation.
Contour lines on a topographical map connect points of equal elevation. If you were to follow a contour line while walking, the elevation would remain constant.