Scientists think that convection currents flow in earth’s
a. continents.
b. mantle.
c. lithosphere.
d. inner core.
select the best answer from the choices provided.

Option B, Mantle

Explanation:

Mantle is formed out of molten magma. Magma is the inner core of earth that melts when movement occurs between the tectonic plates and the dense (heavy ) plate get subducted below the light plate there by generating convectional current in the mantle of earth. These convectional currents further drive the tectonic plates movement. Most of the convectional currents are thermal convection currents which arises when hot magma rises and cool magma sinks due to density difference.  

Hence, option B is correct.

events in order:

1.       vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar   shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone  

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.