Answer:
Option A
Explanation:
The green houses gases concentration increases in the the troposphere layer of the atmosphere due to which the sunrays (IR radiation) reflected back by earth are restricted by the green house gases thereby increasing the temperature of the earth and make the climate warmer.
Hence, option A is correct
The economic crisis in most of the European countries was one of the primary reasons for migration in European countries.
Explanation:
Earlier after the end of second world war, many people migrated from country side to developed countries in search for work, with the intend to get a better life. Many unskilled labors got job in developed countries after this world war.
But when countries started facing economic crisis many workers started migrating to their home countries. There was land shortage and job shortage at this time. Farmers faced crop failure
Another cause of this migration was civil war that took place in Spain.
Most people migrated to seek religious, political and personal freedom.
This migration was also impacted by global conflicts also.
Answer:
Option D, might fall, but we cannot know without more information
Explanation:
Complete question
If real GDP falls by 2% while work hours fall by 10%, then labor productivity:
a. falls
b. is unchanged
c. rises
d. might fall, but we cannot know without more information
Solution -
As we know
Productivity is equal to Real GDP/ Total Hours Worked. This means that if working hours of the labor force reduces then the productivity will rise.
Here GDP also falls but compared to the total working hours the fall of GDP is 1/5. Hence, the productivity might fall/rise as compared to the case when neither the GDP nor the working hours were falling.
Hence, option D is correct
B. !!! no other answer choices have to do anything with health
