1.which of the following is a layer of the atmosphere select one: a. biosphere b. planosphere c. weathersphere d. stratosphere 2.which layer of the atmosphere contains the ozone layer? select one: a. troposphere b. stratosphere c. mesosphere d. thermosphere

i had this question and the answer was 3.15 miles.

martina travels from school to her mom's office. from there, she walks to school. after school, she walks to the library and then to a friends house before finally ending back at home. find martina's total distance traveled.

a) 0 miles  

b) 0.4 miles  

c) 1 mile  

d) 3.15 miles