Ralph is playing a note on his guitar. He plays the note once with his guitar unplugged and again plugged in to an amplifier. He records the sounds with his computer to analyze them. The two sound waves are shown below.

Which wave most likely was made by the quitar plugged into the amplifier? Explain your reasoning.

Up until 1938, paleontologists accepted the idea that coelacanths (an ancient fish) went extinct at the time that they last appear in the fossil record, about 80 million years ago. but in 1938, a live coelacanth was discovered off the coast of south africa that was compared to the fossil record and found to be the same species what goal of science does this discovery represent

What’s the student’s scientific question

When a cell is in a solution that has the same concentration of water and solutes as its cytoplasm, the cell is said to be in a(n) solution. a. isotonic b. hypotonic c. hypertonic b. facilitated