Answer:
The correct answer is option d. "Humans share a deep evolutionary ancestry with other animals that can be seen in reappearing atavisms or body parts that no longer seem to have a function".
Explanation:
A vestigial organ or vestigial structure is an anatomical feature that no longer seems to have a function, but they used to serve a purpose in an ancient form of an organism in the past. Atavisms, are vestigial organs that seem to reappear after having been lost through evolutionary change. Charles Darwin's studies on the subject made him conclude that humans share a deep evolutionary ancestry with other animals that can be seen in reappearing atavisms or body parts that no longer seem to have a function. He published his studies on human vestigial organs and atavisms in his book "The Descent of Man, and Selection in Relation to Sex".
Acid causes metals to corrode
Answer:
At the tip of each bronchiole is Alveoli.
Explanation:
In respiratory system Bronchiole are an important part. They function as a passage for the transport of air coming from the nose and mouth towards alveoli. Smooth muscles present in Bronchiole control the air flow by contraction and relaxation. At the tip of each Bronchiole air sacs called Alveoli are present. The function of alveoli is to exchange oxygen and carbon dioxide to and from blood.
