Answer:
B. Rapid development of technology.
Explanation:
Airplanes were not a thing yet. Railroads were still the main form of transportation at that time.
Answer:
Most researchers agree that drafting papers and interpreting results deserve recognition — but opinions don't always match authorship guidelines. Most researchers agree that drafting papers and interpreting results deserve recognition — but opinions don't always match authorship guidelines.
Explanation:
That is called an obtuse angle.
Answer:
Atmosphere is the envelope of gas which surrounds any celestial body.
Explanation:
The importance of atmosphere of the earth are:-
⇒The presence of the atmosphere plays a significant role in the water cycle. It facilitates the formation of clouds which remains suspended until they are heavy enough to pour down on the earth as rain,hail or snow.
⇒Protects the life forms of the earth from the harmful UV rays of the sun.The presence of the ozone layer does this by reflecting the UV rays of the sun.
⇒ It keeps the temperature of the earth constant so that it is suitable to support life.
⇒It protects the earth from smaller meteors.
⇒ Contains N2O2 and other gases which are necessary to support the life form on the earth.
⇒Facilitates combustion and without the atmosphere combustion is not possible.
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