Which of the following best compares mosses and ferns?

they are both vascular plants, but mosses are gymnosperms and ferns are angiosperms.
they are both angiosperms, but mosses produce seeds and ferns produce spores.
they are both gymnosperms, but mosses have flagellated sperm and ferns do not.
they are both seedless, but mosses are nonvascular and ferns are vascular.

d. both are seedless but mosses are nonvascular and ferns are vascular

Explanation:

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.