What effect did this bloom of algae have on the stream?

The algae upset the balance of carbon dioxide and oxygen in the water, causing fish to die. The algae acted as a thermal blanket on the stream, causing the water temperature to increase and the fish to thrive The algae attached itself to the stream bank and narrowed the width of the stream. This caused the water to flow at a faster rate.

more than, less

less than, more

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