A 19-year old man presents to the ED after rolling his left ankle playing basketball earlier in the evening. X-rays of the ankle do not reveal a fracture. The exam reveals a positive anterior drawer test with no endpoint on the left. Which of the following is the most likely diagnosis?A. Achilles' tendon rupture
B. Grade 1 tear of the calcaneofibular ligament
C. Grade 2 tear of the deltoid ligament
D. Grade 3 tear of the anterior talofibular ligament

What is earths lithospheric plates interact at

1. emigration the movement of people from one place to another 2. immigration a situation in which resources are being used up at a faster rate than they can be replenished 3. migration the leaving of one's homeland to settle in a new place 4. overpopulation the movement of people to a new country 5. sustainable development a situation in which the birth rate is not sufficient to replace the existing population 6. underpopulation the ability to meet current needs without reducing the ability to meet future needs 7. unsustainable development the increase in the population of a city 8. urbanization a situation in which the number of people exceeds the available natural resources in an area

Are the earth's ocean floor and continents the same age geologically? why or why not?