I believe the correct answer is homeostasis.
B
Explanation
Sodium Fluoride
Answer:
C
Explanation:
it couldnt be A or B
and ya know what people say "if you dont know pick c"
hope this helps
Answer:
Mountains are cooler than plains because with increase in height the temperature decreases. EXPLANATION: Mountains are located in high elevations and plains are located in low elevations. Their respective heights are measured by term called as their height above sea level.