Divergent plate boundaries are present under continents during ...

[rachel9]

Divergent plate boundaries are present under continents during the early stages of continental breakup. When magma wells up beneath a continent, the crust is initially elevated, stretched, and thinned, producing ___________________ _.
 Fill in the blank(s) with correct word

Question 2

Index, or guide, fossils are most useful because they ____.
 A)occur over small geographic region
 B)lived during a brief period of geologic time
 C)rarely occur
 D)lived over a long period of geologic time
 E)are found in all types of rock

[frogdreck123456]

Answer to Question 1

rift valleysfracturesfau ltsvolcanic activity

Answer to Question 2

B