Oxygen forms 21% of earth’s atmosphere
Answer:
The geologic time scale is divided into eons, eras, periods, and epochs.
Explanation:
C. Still , because it's just a pond and it's not connected to anything else . It's by itself :-) hope this helps
Answer:
1. the mountain building and other changes associated, over hundreds of millions of years, with global-level plate tectonics. denudation and weathering processes, both those operating at the present time and those which have operated, with stunning long-term effect, over tens of millions of years.
Explanation:
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Answer:
d. scale up representations of objects in space
Explanation:
The models of the solar system are most commonly used for scaling up representations of the objects in space. These models give nice and simple representation of the objects that are in close proximity to Earth, thus providing us with some basic knowledge about their size, distance from the Sun and each other, their orbits, and if the moons are included, than information about them as well. The scaling up manages to help us understand just how small our planet is when compared to other objects, and how much smaller we are in comparison to it all.
