Until the early Proterozic there were only negligible amounts of free oxygen in the atmosphere
I would sort them into the categories of metamorphic rock, sedimentary rock, and igneous rock.
Igneous rocks are made from the cooling and solidifying of lava or magma. Pumice is one of these rocks, it's made from lava being thrown out of volcano, and rapidly cooling. Obsidian and granite the other igneous rocks in the list.
Sedimentary rocks are made from the sedimentation of smaller particles. Coquina limestone is one of these - it's made from the sedimentation of the shells of dead animals.
Metamorphic rocks are rocks which are created by extreme heat and pressure. Essentially, they used to be a different kind of rock, and now they're metamorphic rocks. Gneiss and soapstone are both metamorphic rocks.
So here are your final answers:
Igneous: Granite, Obsidian, Pumice
Sedimentary: Coquina limestone
Metamorphic: Gneiss, Soapstone
Hope this helped!
<span>E. Earth is tilted on its axis.
Procession is the process in which a spinning body tilts because of the torque that it produces when moving with angular speed. This is because of the total forces that push the body to move with a tilt.</span>
So with the first number in each set, look on the x axis or the horizontal line for the number. For example, 2 1/2 on the horizontal line or x axis is on the right side, next to the two and the x. The second number is on the vertical side, and the same thing. In this case, -1 1/2 would be on the bottom in between the -1 and the arrow.
Now find the place where the two intersect on the coordinate plane, and put a dot there to mark the coordinate.
![7\sqrt[n]{x} 6\geq 34\sqrt{x}](https://tex.z-dn.net/?f=7%5Csqrt%5Bn%5D%7Bx%7D%206%5Cgeq%2034%5Csqrt%7Bx%7D)
