What happens to the sound as frequency decreases? *
a. it gets higher pitched
b. it gets lower pitched
c. it gets louder
d. it gets quieter

Describe the function of the endomembrane system? what organelles are involved?

Which of the following situations is impossible? a) an object has velocity directed east and acceleration directed east. b) an object has zero velocity but non-zero acceleration. c) an object has constant non-zero velocity and changing acceleration. d) an object has velocity directed east and acceleration directed west. e) an object has constant non-zero acceleration and changing velocity.

Ne way in which elements differ from each other is the structure of the electron cloud in each element's atoms. in an electron cloud, an electron that is farther away from the nucleus has