Answer:
Sustainable energy is clean and green.
Explanation:
- The use of a vehicle that uses CNG instead of PNG and diesel, has various environmental standards that are set by the international united nations guidelines is best method pf save and make sustainable use of the environment.
4.54 billion years<span>The "best" age for the Earth is based on the time required for the lead isotopes in four very old lead ores (galena) to have evolved from the composition of lead at the time the Solar System formed, as recorded in the Canyon Diablo iron meteorite. This "model lead age" is <span>4.54 billion years</span></span>
Answer:
They knew there was dissolved iron in the early oceans -- a strong indication that Earth's free oxygen concentrations were exceedingly low.
Explanation:
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Answer:
is an instrument used to measure and quantify the amount of light that emanates from a celestial body.