As far as length of time back into the past that it is useful for ...

[KimWrice]

As far as length of time back into the past that it is useful for estimating climate, this method most closely matches that of historical documents
 A) pollen.
  B) isotopes.
  C) glacial features.
  D) tree rings.
  E) isotopes.

Question 2

Polar climates
 A) extend far south of the Arctic circle.
  B) have little precipitation.
  C) are characterized by strong low-pressure systems.
  D) are the source of cT air masses.
  E) are also called highland climates.

[Shshxj]

Answer to Question 1

D

Answer to Question 2

B

[KimWrice]

TYSM

[mcabuhat]

Excellent