Select the best response from the drop-down menus. are the main transportation system to send oxygen to the tissues and organs in the body. serve as the body’s defense system against infections and other diseases.
Answer
Selection 1:
Red blood cells
Selection 2:
White blood cells

Question

Select the best response from the drop-down menus. are the main transportation system to send oxygen to the tissues and organs in the body. serve as the body’s defense system against infections and other diseases.

Answer

Selection 1:

Red blood cells

Selection 2:

White blood cells

Revolt · Accepted Answer

Red blood cells; Selection 1: Red blood cells; Selection 2: White blood cells