tiwaribianca475
26.04.2021 •
Biology
How much oxygen does the
atmosphere contain?
O 12%
0 76%
O 35%
0 26%
Solved
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Ответ:
20.95%
Explanation:
By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.
Ответ:
Replication occurs only once in preparation for both mitosis and meiosis. The daughter cells of mitosis are identical to the parent cell, but in meiosis the daughter cells have only one of each homologous chromosome pair. Synapsis occurs only in prophase I of meiosis. 2.
Explanation: