The correct answer is vital capacity (VC).
<span>
Vital capacity is the full amount of air that
the lungs can expel after having been filled to maximum. It can be a measure of
a person’s respiratory health and is usually measured regular spirometer.</span>
Answer: Increased predation
Explanation:
A biotic factor can be define as a living being of the ecosystem which interacts with the non-living physical environment. Predation is an ecological interaction among the distinct species in an ecosystem. In this one organism kills the other in order to obtain it as food. The organism which is killed is called as prey.
The increased predation can be considered as biotic because of the fact that it involves the interaction of the living beings in the marine environment.
The correct answer for this question is letter C. Epiglottis is the one who prevents food from entering the trachea. It moves in a back and forth manner. When a person swallows, it covers the entrance of the larynx by flattening itself backwards.