You're flying in a plane and the seatbelt sign is turned off, You're in Stratosphere
This happen when you usually entered 16km in height. Up to this point, it would be safe to use wireless communication device.
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Answer: A solar eclipse is a portion of the earth that is engulfed in a shadow by a moon and sun interaction.
Explanation:
Answer:
C
Explanation:
Population is the number of simular species in the area, so the land and fish don't count.
Answer:
Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity.
Explanation:
It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.
Double-stranded RNA-mediated interference (RNAi) is a simple and rapid method of silencing gene expression in a range of organisms. The silencing of a gene is a consequence of degradation of RNA into short RNAs that activate ribonucleases to target homologous mRNA.
