Question

the graph below shows a persons body temperature over time while exposed to hot weather. use this graph to answer questions 10 - 12.

1. which conclusion is supported by the data?

body temperature (°c)
a. the body uses negative feedback to bring temperature back to normal.
b. the body stops regulating temperature when exposed to heat.
c. the persons temperature increases indefinitely/forever.
d. positive feedback lowers the body temperature.

1. in the graph above, which is the indep

Explanation:

• Option A: Negative feedback is a mechanism that reverses a change. In the graph, the body temperature initially rises (due to hot weather) but then comes back down. This is an example of negative feedback as the body is working to bring the temperature back to a normal range.
• Option B: The graph shows that the body is still regulating temperature (as it doesn't stay at the elevated temperature).
• Option C: The temperature does not increase indefinitely; it peaks and then decreases.
• Option D: Positive feedback amplifies a change. Here, the body is reducing (not amplifying) the temperature change, so it's not positive feedback.

Answer:

A. The body uses negative feedback to bring temperature back to normal.