Answer:

Explanation:
thickness of aerosol layer is 2.5 km
zenith angle is 40 degree
we know that

where

is extinction coefficient
extiction cross section
N = Concentration





transimiitance 


Answer:
As San Francisco and other cities in the Bay Area commemorate the anniversary of the 1989 Loma Prieta earthquake, we are reminded once again of the need to get prepared for the next natural disaster. The 6.9 magnitude earthquake not only resulted in collapsed homes, displacement of residents, but it also was a terrifying reminder of the need to reinforce the structures we use every single day.
I hope this helped, have an awesome day!
Answer:
the Korean War began in 1950 when North Korean communist Army came into the 38th parallel and invaded non-communist South Korea.
Explanation:
so the main reason that this war happened was because of the spread of Communism during the Cold War and Japanese Occupation of Korea during World War II
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Answer:
Water Erosion
Explanation:
The "Blue Caves" in Greece are a series of sea caves, also known as a littoral caves. Littoral caves are shaped primarily by wave action in the form of water erosion.
Answer:
i hope it helps and my dear this is a chemistry question
Explanation:
The gas constant (also known as the molar gas constant, universal gas constant, or ideal gas constant) is denoted by the symbol R or R. It is equivalent to the Boltzmann constant, but expressed in units of energy per temperature increment per mole is know as molar mass