A. Igneous because liquid rock is magma
Answer: Aristotle is known as the Father of Biology. In 4th century, Aristotle travelled to Lesvos filled with wildlife. His fascination with what he found there, and his fascination is what led to the birth of a new science known as Biology.
Explanation:
Smooth muscle is present throughout the entire tracheobronchial tree. Bronchial smooth muscle tone is regulated by the vagus nerve, which, when stimulated, causes constriction (bronchospasm), and by the sympathetic nervous system, which produces dilation (bronchodilation).
