Answer: 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.
Explanation:
<span>Viruses, bacteria, fungi, protozoa, and parasitic worms are known as </span>prions.
Answer:
composite volcanoes, or stratovolcanoes, are formed though the collision of Oceanic and continental plate boundaries.
A snowflake forms when water vapor<span> sublimates, or </span>turns directly<span> from a gas </span>into <span>its </span>solid form<span>, </span>ice<span>.</span>
