Jeremy dove into a pool and made waves. Every 3 seconds, 1 wavelength passes the lifeguard's seat. What is the frequency of the wave? Multiple choice question. A) 3/1 Hz
B) 2 Hz
C) 4 Hz
D) 1/3 Hz

Bernie drove home from a vacation in 1.5 hours. he traveled a total distance of 60 miles. what was his average speed in miles per hour? a. 60 mph b. 90 mph c. 40 mph d. 55mph

Energy flows from the producer level to the level. is called

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)