Why are some oil tankers being built with two hulls? a. to make the tankers heavier b. to make the tankers easier to steer c. to prevent nonpoint-source pollution d. to prevent oil spills

Option d

Explanation: Some of the oil tankers are being built with two hulls in order to prevent the oil spillage.

The main problem that is associated with the transportation of the oil is its spillage because it is harmful for the environment, human beings, animals and moreover for the aquatic animals.

To prevent from these problems the oil tankers are being built with two hulls.

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.