Answer:
Air pressure is greater at sea level than at the top of a mountain. The amount of air at sea level is greater than that on top of a mountain.
Explanation:
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Explanation:
A Giant Gas Cloud. A star begins life as a large cloud of gas.
A Protostar Is a Baby Star.
The T-Tauri Phase.
Main Sequence Stars.
Expansion into Red Giant.
Fusion of Heavier Elements.
Supernovae and Planetary Nebulae.
The elements in the periodic table are arranged in columns - elements in the same column exhibit similar properties.
Mg and Sr are in the same column (period I)
Br and F (period XVII - 17)
S and O (period XVI - 16)
Answer:
the cell wall for sure not to sure about the others
Cells have many structure inside of them called organelles which allow it to function and survive
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