Answer:
Radioactive isotopes are unstable and will decay. ... The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope.
I think what is soviet union or germany
Answer:
If you're an edge it's multiple choice and it would be c
Answer:
Mountain, Canyon, Delta
Explanation:
The uppermost box would be mountain.
The box below that one would be canyon.
And the farthermost box to the right would be delta.
If you thought about it, changing those circles to make them 3D is like stacking layers on top as they get smaller, this would form something that looks like a mountain.
Water typically runs through a canyon and the lines appear to be separating for the water.
Deltas are wetlands that form from rivers emptying their water into another body of water. If you were to look up an image of a delta that would make it easier to understand, it also looks like what the image provided is trying to demonstrate.
Answer:
little rainfall
Mesopotamians depended on the annual flooding of Tigris and Euphrates rivers
this was similar to the Egyptians
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