Which phrase describes the way air particles vibrate with respect to the way a sound wave travels?

A. Opposite to
B. Parallel to
C. Equal to
D. Perpendicular to

the answer is parallel to

Explanation:

just took the apex quiz and got it right buttt sound waves are always longitudinal waves and longitudinal waves always move parallel :)

succession returns a disturbed

ecosystem to a more stable state. this is also classified into two (2) types:

primary succession and secondary succession. the primary succession arises when

a new land is transformed and a bare rock has been exposed providing an environment

that can be occupied for the first time. while, secondary succession occurs

when a previously occupied environment was disturbed that kills much of all its

community

explanation: