What exactly does dendrochronology attempt to date?
a. The age of the last outermost ring..
b. The year that the tree was the healthiest, thus providing a signal of climatic amicability.
c. The year a tree was used in to build a structure.
d. The year a tree was burned.
e. The length of the sunspots effecting the earth's climate
Question 2
A tree ring sequence is only useful in the region in which it was developed because
a. trees respond to climate and climate is regionally variable.
b. researchers tend not to share their data with one another, and thus each area needs its own specialist.
c. tree rings are partially conditioned by soil chemistry which can be highly variable over small distances.
d. in order to be useful, tree rings must be calibrated using radiocarbon dating, and calibration curves are regionally specific.
e. the analysis is difficult and time consuming, hence several localized laboratories are necessary to process the quantity of samples.
Fibrous pericardium (outermost)
The F Ring and One of Its Shepherds
Saturn’s Ring System
(a) The relative age ranges of different dating techniques depend upon the half-life of the system u
Beta-lactam antibiotics: The beta-lactam ring is common to many different classes of antibiotics.
Illustration of the penicillin structure. The β-lactam ring gives penicillin its antibacterial ...