Answer:
so they can fly obviously
Answer:
The depth (distance from top to bottom) of the atmosphere is greatest at sea level and decreases at higher altitudes. With greater depth of the atmosphere, more air is pressing down from above. Therefore, air pressure is greatest at sea level and falls with increasing altitude.
Explanation:
Your welcome<3
Got it from flexbooks.ck12.org
Answer: Amino acids.
Explanation:
There were an famous experiment made by two biochemists called Stanley Miller and Harold Urey, in the year of 1953. They made it at the University of Chicago, USA.
In this experiment, Stanley Miller and Harold Urey simulated hypothetical conditions that Earth’s early atmosphere had, in order to test the hypothesis that gases (as the methane, carbon dioxide, ammonia, amonia and water vapor) allowed inorganic chemicals to form organic molecules.
After one week, these scientis found that organic compounds were formed.
Through this experiment the scientists Stanley Miller and Harold Urey obtained that several amino acids were formed (the most abundant was Glycine).
According to their work, they got 13 of the 22 aminoacids that are used to make proteins in living cells.
The year 2016, with a temperature deviation of 0.94°C, is considered to be the hottest year on record. 2015 and 2017 came close in second and third respectively with temperature deviations of 0.9°C and 0.84°C respectively. 2014’s temperature deviation of 0.74°C made a constant rise in global temperatures from 2014 to 2016. Only 2017 recorded the initial fall in temperatures which had been experienced continuously from 2014, spanning through 2015 and 2016. Hope this helped.
Answer:
prokaryotic cells don't have a nucleus
