It keeps the water in the plant, so it keeps the water from evaporating and killing the plant
Hello there!
Your question states: Balanced chemical equations demonstrate
The answer is B. The law of conservation of mass
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~ Zoe
False. Strontium 90 has a half life of only 30 years, and as millions of years pass, about the time fossils have been around, most if not all of any strontium would have decayed.