What environmental factors could explain differences between breath holding and a "dive"?

Body position, temperature of water and pressure on the face.

Breath holding can be defined as a physiological adjustment that involve the cardiovascular, nervous and respiratory system that act in a manner that induces O2 conservation and blood flow diversion to the vital organs such as heart and brain. However, the environmental  factors that differentiate between breath holding and dive includes: body position, temperature of water and pressure on the face.

a plastic spoon that has a temperature of 78° f is placed into a bowl of soup that has a temperature of 84° f. which of these correctly describes what will happen?

energy as heat moves from the soup to the spoon.

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.