Answer:
C
Explanation:
Positive natural selection, or the tendency of beneficial traits to increase in prevalence (frequency) in a population, is the driving force behind adaptive evolution. ... At the molecular level, selection occurs when a particular DNA variant becomes more common because of its effect on the organisms that carry it.
Nostrils- Nasal chambers - Internal nares - Laryngopharynx - Larynx - Trachea - Primary bronchi - Diaphram - Lungs- Bronchial intercom - Alveoli.
I hope it helped u..!!
Firstly they are not membranes and they are villi's which increase the surface area during digestion
Answer:
Explanation:
a chemical reaction that occurs when a substance reacts with oxygen, releasing energy in the form of heat and light.
