The dating and study of annual rings of trees is called:
Dendrochronology
Dendrochronology dates and studies tree rings. Matching patterns in overlapping ring sequences can establish calendar years and provide evidence about past environmental conditions.
Consider the following salient features of Tornado and choose the correct option:
A. Tornadoes are very violent rotating systems of air
B. The pressure in the center of tornado is extremely low
C. The movement of tornadoes is in well-defined route and direction
D. The arrival of tornado is heralded by dark and thick clouds in the sky
Choose the correct answer from the options given below :