You find an old tree stump in a forest and would like to use it for tree-ring analysis, but you don't know when the tree was cut down. The best way to establish dates for the analysis is to:
A) submit the tree stump to carbon-14 dating analysis.
B) estimate the age of the tree stump based on the level of decay it has experienced.
C) assign small rings to years of known droughts.
D) compare patterns in the tree rings to ring chronologies sampled from nearby trees on known dates.
Question 2
Smoke released from a stack into a very stable air mass would tend to:
A) spread out horizontally but not mix up or down.
B) mix rapidly downward.
C) mix both upward and downward.
D) go almost straight up.
E) diffuse rapidly in all directions.
(a) Feeding by bear on salmon results in large allochthonous inputs of nutrients into (b) the forest
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