Answer:
Convection current
Explanation:
Convection currents occur when a heated fluid expands, becoming less dense, and rises. The fluid then cools and contracts, becoming more dense, and sinks
Hot air rises because when you heat air (or any other gas for that matter), it expands. When the air expands, it becomes less dense than the air around it. The less dense hot air then floats in the more dense cold air, the cold air due to its greater density moves downward, and the cycle continues, this upward and downward movement is called convection current.
Answer:
Given the comparison made by Thoreau, we can say his opinion is the following:
D) Thoreau believes that most men live earthly, purely physical lives without time for higher, spiritual thoughts.
Explanation:
"It appeared to me that for a like reason men remain in their present low and primitive condition; but if they should feel the influence of the spring of springs arousing them, they would of necessity rise to a higher and more ethereal life."
<u>Thoreau uses the numbness of the snake as a metaphor for the figurative numbness of men. The primitive state that he mentions above is a low state of consciousness, solely focused on material possessions and earthly pursuits that, to his mind, have no real purpose. Thoreau believes it is possible for men to reach higher intellectual and spiritual grounds. However, most of them seem to prefer the numbness.</u>
