How was the geologic time scale developed in the 19th century? What will be an ideal response?
Geologists applied relative-dating methods to rock outcrops in England and western Europe, and they
put together the major geologic time units. They made a composite geologic section, using the
principles of superposition and fossil succession. The rocks are in sequential order, but there are no
absolute ages.
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Apple trees are examples of angiosperms. Indicate whether the statement is true or false
Large, explosive volcanic eruptions eject large quantities of ________ into the stratosphere, causing temporary global cooling
Fill in the blank(s) with correct word
Which of the following can trigger cyclogenesis?
A) mountain barriers B) temperature gradients C) a strong jet stream D) all of the above E) none of the above
With the demise of Native American civilizations, indigenous languages have completely died out in Latin America
a. True b. False Indicate whether the statement is true or false