Question 56 (1 point)
variations in atmospheric composition can be studied using ice cores some of which provide information going back about 800,000 years.
question 56 options:
true
false
question 58 (1 point)
a cross-valley profile is typical of canyons and valleys eroded and deepened by alpine or valley glaciers.
question 58 options:
y
w
u
v
question 59 (1 point)
normal faults form in response to horizontal, tensional stresses that stretch or elongate the rocks.
question 59 options:
true
false
question 60 (1 point)
deposition of glacial rock flour from blowing winds is responsible for these deposits are extensive in the united states and china.
question 60 options:
deflation ventifacts
loess deposits
blowout pavement
star steppes

Q.56.  True.    Q. 58.  U shaped.  Q.59.  True.  Q. 60.  loess Deposits.

Explanation:

Scientific evidence proves that the ice core directly record climatic data and that is hidden in their layers in the form of samples of atmospheric bubbles. Like it is in rock forms. They can found based on carbon dating.

U shaped profiles are generally found in the typical profile of canyons and valley eroded and deepened by alpine or valley glaciers. Formed due to the process of glaciation.

In response to normal folding, the Horizontal, Tensile stresses that force the rocks and elongate them can be seen in Dip-slip, Strike-slip, ring faults, etc.

Loess Deposit is a fine-grained material that has been transported and deposited by winds action coming from the glacial outwash plains. Deposits include silt, sand and clays, muds residues of the glacial valleys.