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.
The Uranian ring system
Jupiter’s Ring and Torus
Jupiter’s Ring and Torus
The ring-tailed lemur is the best-known of the Madagascar primates.
Low-molecular-weight precursors to the purine ring