EARTH'S PROTECTIVE SHIELD. Earth is surrounded by invisible gases that form a thin protective blanket that we call the atmosphere. It contains the oxygen that we breath as well as other important gases such as nitrogen, carbon dioxide, water vapor, and ozone.
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lipid are the fats that stores energy for insulation
Answer:
Escherichia was first isolated and characterized in 1985
Explanation:
Answer:
the type of mutation is called insertion
senescence, such as through injury, poison, disease,..
