Which of the following is an example of biological control? a.
using chemicals that kill pests.
b.
using organic fertilizers.
c.
using a natural predator that kills pests.
d.
none of the above.

Which statement correctly describes the relationship between frequency and wavelength?

Which of the following are used in an electrochemical cell? a. electrodes b. electrolyte c. terminals d. all of the above

Ben (55kg) is standing on very slippery ice when junior (25kg) bumps into him. junior was moving at a speed of 8 m/s before the collision and ben and junior embrace after the collision. find the speed of ben and junior as they move across the ice after the collision. give the answer in m/s. describe the work you did to get the answer.