No other type of known terrestrial source of tectonic activity has produced earthquakes of this scale.

Both wind and ocean currents transported these sediments in suspension thousands of kilometers from their terrestrial source.

In some instances, nearshore ecosystems have an excess of nutrients due to runoff and other terrestrial sources.

The natural atmosphere is not completely dark, even in the absence of terrestrial sources of light and illumination from the Moon.

At the opposite end of the scale all terrestrial sources are feeble.

It can also come from the Moon or from terrestrial sources such as streetlights.

The terrestrial source for tektites is supported by well-documented evidence.

One isotope of Mg has a nuclear magnetic moment and it is present in terrestrial sources at about 10%.

He found that there was far more ionization at the top than what was expected if only terrestrial sources were attributed for this radiation.

Over 120 naturally occurring nitriles have been isolated from terrestrial and marine sources.