By mutation over time of RNA chains
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if i lived in the 1800s I think would have more free time because i wouldn't be on electronics all the time. I might not have an education because times were hard then and many kids had to work in factories like their parents to support the family. I could get sicker easier because there weren't many health codes back then and lining conditions weren't teh best
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Tidal volume is the amount of air breathed in with each normal breath. The average tidal volume is 0.5 litres (500 ml). Minute ventilation is the total volume of air entering the lungs in a minute. The average minute ventilation is 6 litres per minute.
Answer:Spectroscopy helps astronomers to determine the composition, temperature, density, and motion of an object.
Infrared spectroscopy helps to identify the atoms and molecules in the object.
The red shift or blue shift (Doppler Effect) in a spectral line tells how fast the object is receding from Earth or coming toward it.
The Doppler shift enables astronomers to discover extrasolar planets.
As a planet orbits its star, the star is alternately moving away from or toward us.
Astronomers can use the Doppler shifts to calculate the speed of the star and the mass of the planet that is tugging on it.
Explanation: