When a person exercises, the cells of the body need more oxygen. this is achieved by the system increasing the amount of oxygen that is supplied to the blood and the system increasing the rate of delivery of the blood to the cells of the body.

A. digestive; circulatory
B. circulatory; digestive
C. respiratory; cardiovascular
D. cardiovascular; respiratory

Anature center offer 2 guided walks. the morning walk is 2/3 miles. the evening walk is 3/6 mile. which is shorter

15 points what is the end behavior of this graph? & what is the asymptote of this graph?

Plz answer asap! i will reward brainliest and 12 points for these three questions!take notice: these three questions are completely different! 1) what is the percentage of sugar in the syrup made of 10 kg of water and 4 kg of suugar? 2) what was the original price if after 10% discount it became $450? 3) at first a price was decreased by 12%, then it was disounted again by an additional 5%. what is the percent of the total discount? , and remeber i will award brainliest and 12 points!