Headphones take in sound waves. This is an example of ... A)reflection
B)absorption
C)transmission
D)refraction

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

How many moles of cu are needed to react with 5.8 moles of agno3? cu + 2 agno3 → cu(no3)2 + 2 ag

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.