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The volume of water that goes past a specific point of a stream or river is the

Spectral lines can act like a __________ to help astronomers identify the chemical __________ of the electromagnetic radiation characteristics of a star.

Modern radio telescopes consist of a dish that __________ incident __________ energy to a focus where instruments collect and analyze the energy.

One way to mitigate flooding is to build __________, which are areas that are intended to flood and, as such, are not zoned for buildings.

If someone were to dump chemicals into a dry river, such as the one shown below, those chemicals would

Identify the structure in the red circle.  

What are the two most abundant elements that make up the composition of the Sun?

The difference between wells and springs is that

The distance between Mars and Jupiter would MOST likely be reported in

Describe the positions of the Earth, its Moon, and the Sun during a solar eclipse.