Explain the reasons for changes in how organisms are classified.

Due to overlapping classifications and inability to classify organisms with limited information

Explanation:

Earlier the classification systems were based on the similarities and dissimilarities between the morphological traits of organisms. However, with discovery of more and more species it was found that several organisms with in the same species have different characteristics while organisms from different species have similar characteristics. In order to study all these variations , genetic engineering was used. This lead to a newer classification system where species are now defined based on their genetic structure and evolutionary history.

This new approach of classification also led to creation of new sub species group within the same species.

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.