Base your answer to question 36 on the passage
below and on your knowledge of social studies.
…balanced against this are the facts that russia,
as opposed to the western world in general, is still
by far the weaker party, that soviet policy is
highly flexible, and that soviet society may well
contain deficiencies which will eventually weaken
its own total potential. this would of itself warrant
the united states entering with reasonable
confidence upon a policy of firm containment,
designed to confront the russians with unalterable
counter-force at every point where they show
signs of encroaching upon the interests of a peaceful
and stable world….
— george kennan, “the sources of soviet conduct,”
foreign affairs, july 1947
in this passage, george kennan is suggesting that
the united states should
(1) abandon western europe to soviet control
(2) launch an attack on the soviet union
(3) pursue policies to limit the spread of soviet
influence
(4) admit that the soviet union posed no real
threat to the united states

a mercury barometer is a device that uses the physical properties of mercury in a tube to measure barometric pressure. mercury barometers are used for : -

1. measurement of atmospheric pressure  

2. determining the altitude of a place

3. weather forecasting

4. calibration and checking of aneroid barometers

5. application in fluid mechanics

6. measurement of pressure in aircrafts

7. surface weather analysis

8. preparation of barographs

9. usage in physical sciences like physics, astronomy & chemistry

10. preparation of aircraft altimeters

characteristics of mercury barometer : -

1.used to define and measure atmospheric pressure.

2.on the average at sea level the column of mercury rises to a height of about 760 mm.

3.this quantity is equal to 1 atmosphere.

4.it is also known as standard atmospheric pressure.

5.a barometer in which the weight of a column of mercury in a glass tube with a sealed top is balanced against that of the atmosphere pressing on an exposed cistern of mercury at the base of the mercury column, the height of the column varying with atmospheric pressure.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.