Which of the earth’s biomes covers over 70% of the earth’s surface? a. desert b. marine c. coniferous forest d. deciduous forest

The graph below plots the temperature and luminosity of stars on the main sequence.

The first atomic explosion was detonated in the desert north of alamogordo, new mexico, on july 16, 1945. what percentage of the strontium-90 ( yr) originally produced by that explosion still remains as of july 16, 2016?

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