Question

Red blood cells, which carry oxygen gas to the cells (which they need for aerobic cellular respiration/ to make enough ATP to stay alive!) only live for 90 days and are constantly being made in the marrow of your long bones. This is an example of an important interaction between WHICH 2 SYSTEMS?

A. digestive
B. urinary
C. circulatory
D. skeletal
E. muscular​

Answer 1

C I DID THIS!! ONE BEFORE

Answer 2

Circulatory and skeletal

Step-by-step explanation:

Bone marrow is found in your bones and red blood cells are used in your ciculatory sytem