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

Algebra 1: unit 6 part 2 of test a) the table shows a linear function. x 0 1 2 3 5 13 21 29 37 45 53 (a) determine the difference of outputs of any two inputs that are 1 unit apart. show your work. (b) determine the difference of outputs of any two inputs that are 2 units apart. show your work.

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

Mary used 1/7 of a spool of ribbon to complete 4 projects. she used the same amount of ribbon on each project. how much ribbon did she use on each project?