The eastern meadowlark and the western meadowlark are two bird species that look very similar to each other. Why do biologists not consider them the same species

The question is incomplete as it does not have the options which are:

The two species do not live in the same habitat and thus do not interbreed in nature.

Explanation:

According to the most widely accepted concept of biological species, a species is considered a species if it is able to interbreed among the individuals and produces viable offsprings.

In the given question, it is clear that meadowlark lives in the eastern and western part of the country therefore they are separated by the geological barriers and are reproductively isolated. Therefore they do not mate and produce a viable organism and thus are not considered species.

Thus, the selected option 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.

this is more of a statement than a question. is there answers to go along with this, or is it opinion based?