That the oxygen levels in the test tube increased and carbon dioxide levels decreased because plants produce oxygen using carbon dioxide
Answer:
The weather change as the earth warms because since,20th century due to human activities, particularly fossil-fuel burning which increases heat- trapping greenhouse gas levels in Earth's atmosphere.
Answer:1
Explanation:Because gravity always pulls you down even when your standing on an object.
Answer:
Nuclear power plants generate almost one fifth of the electricity produced in the United States. The nuclear power cycle uses water in three major ways: extracting and processing uranium fuel, producing electricity, and controlling wastes and risks.
Explanation:
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Answer:
It converts the DNA strand into RNA.
Explanation:
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