Answer:
C Noise pollution
Explanation:
because organisms create noise.
Answer:
Basically, the Atrioventricular valves are Mitral and Tricuspid valves located between the atrium and ventricles. Their main functions is to “prevent the backflow of blood from the ventricles into the atrium during the ventricular contraction (systole).
Explanation:
That statement would be True
The existence of land bridges was used to dispute continental drift