What occurs in both solar and lunar total eclipses?

A: One celestial body passes through the umbra of another

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Explanation:

A. The umbra is the shadow so when the sun is aligned with earth and the moon earth's shadow covers the moon causing a solar eclipse. a lunar eclipse is when the moon's shadow blocks earth.

Explanation:

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the wetland preservation movement began in the u.s. in earnest with the clean water act (cwa) of 1972. although not specifically written to protect wetlands, the cwa is comprised of a series of regulations designed to prevent pollutants from contaminating u.s. waters.