C. Phonograph were inferior in sound quality.
Step-by-step explanation:
Researches have shown that plants respond to the sounds of their pollinator.
Some plants begin to produce a greater amount of nectar and some begin to vibrate to attract the attention of the pollinators towards them.
Greater the intensity of the sound of the pollinator, the faster the reaction will be.
Phonographs have a sound of lower intensity when compared to the intensity of sound produced by the radio.
Thus the radio was better than the phonograph in encouraging the concept of cross-pollination.
Answer:
Step-by-step explanation:
2×radius with pi, 28*pi=28 pi or 87.92
Let the second no. be x
-3x = 21 → x = 21/-3 → x = -7
Are you gonna put the expression or what?
Answer:
Its A just explan the work like 129.6/64.8x98
