P1 - about D, how rings form in diff condition.
P2 - what if no change in climate; uncertainties;
Main point - explained D, impact of weather on rings, and uncertainties.
Tone - informative.
1. In the highlighted text, "uncertainties" refers to
pre-think - due to dry condition, how rings are not added.
(A) dendrochronologists' failure to consider the prevalence of erratic weather patterns - no
(B) inconsistencies introduced because of changes in methodology - no; changes in methodology- wrong
(C) some tree species' tendency to deviate from the norm - true but not the answer.
(D) the lack of detectable variation in trees with complacent rings - no
(E) the lack of perfect correlation between the number of a tree's rings and its age - yes; because of uncertainties introduced.
-------------------------------------------
2. The passage suggests which of the following about the ring patterns of two trees that grew in the same area and that were of different, but overlapping, ages?
Often, ring patterns of dead trees of different, but overlapping, ages can be correlated to provide an extended index of past climate conditions
(A) The rings corresponding to the overlapping years would often exhibit similar patterns. - has to be this
-------------------------------------------
3. The passage is primarily concerned with
(A) evaluating the effect of climate on the growth of trees of different species - evaluating is +/- of something.
(B) questioning the validity of a method used to study tree-ring records - questioning is only a part.
(C) explaining how climatic conditions can be deduced from tree-ring patterns - not perfect but covering most of the passage. use of vocab is also moderate "explaining".best of the lot.
(D) outlining the relation between tree size and cell structure within the tree - sub part of P1
(E) tracing the development of a scientific method of analyzing tree-ring patterns - tracing the development of a scientific method --- well not working on a method.
_________________