The diagram shows the life cycle of a butterfly, Which statement besr explains the process occurring in step 5 of the
diagram?
A. An adult's wings expand, and the butterfly becomes more mature.
B. A caterpillar becomes a pupa as it goes through many changes.
C. An adult with wrinkled wings emerges from the pupa,
D. A caterpillar hatches from a butterfly egg,

Me with this and you will be marked brainliest

In which of these cases are the two wave points considered to be in phase with each other?

The frequency of a tuning fork can be found by the method shown. a long tube open at both ends is submerged in a beaker of water, and the vibrating tuning fork is placed near the top of the tube. the length l of the air column is adjusted by moving the tube vertically. the sound waves generated by the fork are reinforced when the length of the air column corresponds to one of the resonant frequencies of the tube. the smallest value for l for which a peak occurs in sound intensity is 7 cm. l what is the frequency of the tuning fork? the speed of sound in air is 345 m/s. answer in units of hz