What is the boundary between the troposphere and stratosphere called?

Which of the timelines above accurately represents the order of historical events in canadian history? a. one (1) b. two (2) c. three (3) d. four (4)

James hutton is ? a. extensively studied fossils. b. revealed that fossils would provide the history of past life. c. created the first scientific classification of plants and animals. d. provided geologic evidence necessary for calculating the time span of evolution.

The nations of indochina a. share a common langauge b. share a common history c. share a common religion d. none of the above