C. Crossing your arms over your chest. The gesture may be perceived as confident or defensive while the others do not express those things.
The five levels of organization in a multicellular organism are cells, organs, tissues, organ systems and organisms. The caliber of intricacy and functionality increases going from cells to organisms.
I’m pretty sure it is d, she is not thinking right
A. Pacemaker cells located in the atria fire before the pacemaker cells in the ventricles. B. It takes time for hormones to diffuse from the atria to the ventricles to trigger contraction. C.The electrical signal generated in the right atrium is delayed at the AV node before passing to the ventricles. D.The ventricular muscle cells contract more slowly than the atrial muscle cells.
Answer: Exhaled air consists of 78 percent nitrogen, 16 percent oxygen, 4 percent carbon dioxide and potentially thousands of other compounds.
Explanation: Does this help???