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Penumbra: Outer, partial shadow: Sun's disc is only partly blocked, with a bit. They only occur during Full Moon when the Earth is between the Moon and the Sun. Umbra during a total lunar eclipse, these eclipses can be seen from the entire edge of the umbra, you will see an increasing fraction of the Sun peeking out
Explanation:
Answer:
Ecosystem stability is the ability of an ecosystem to maintain a steady state, even after a stress or disturbance has occurred. In order for an ecosystem to be considered stable, it needs to have mechanisms in place that help it return to its original state after a disturbance occurs.
The border between Mexico and the united state is 3,145 kilometers (1,954 miles).
aren't they used for like 3-D stuff and measurements
