Which body system is responsible for exchange of oxygen and carbon dioxide between the body and the atmosphere? Answers :
A. Nervous System
B. Excretory System
C. Circulatory
D. Respiratory System

Identify a1 and r for the geometric sequence an= -256(-1/4) n-1

11. a particular type of cell doubles in number every hour. which function can be used to find the number of cells present at the end of h hours if there are initially 4 of these cells? a. n = 4 ()" b. n = 4(2)" c. n = 4 + (2)" din = 4 +"

The distance between two cities is 368 miles. if the scale on the map is 1/4 inch=23 miles, what is the distance between the cities on the map?