Officials associated with international track and field competitions have noted an increase in the number of athletes who use a synthetic form of erythropoietin. Athletes use this drug because it__.

Athletes use this drug because it enhances their performance.

Explanation:

Erythropoietin is expressed principally in the cortical interstitial cells of the kidney, where its transcription is modulated in response to low oxygen levels (hypoxia).

The use of artificial or recombinant erythropoietin stimulates an increase in the production of red blood cells.

This in turn improves the oxygen carrying capacity of blood and enhances the aerobic performance of athletes.  

The side effect of using artificial erythropoietin would be excess production of red blood cells (polycythaemia) leading to blood clots and possible heart attack.

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.