Biology, 01.07.2019 16:00 itsyagirlgona21
How can a megaphone used by a cheerleader allow people on the opposite side of a field to hear her better? a) the metal or plastic of the megaphone cannot absorb the sound waves. b) the inside of the megaphone is like a vacuum because its shape eliminates air pressure. c) the air pressure is greater inside the megaphone than outside and the sound waves are able to travel further. d) solid objects can change the direction of sound waves; megaphones allow users to determine the general direction of the sound.
Answers: 1
Biology, 22.06.2019 07:00, kaperry
Amale bird-of-paradise uses a dance to attract mates in which it flaps its tail feathers on the ground and jumps around a potential female mate. a different male bird-of-paradise does a similar dance but it jumps around the female in the opposite direction. the female bird is only attracted to one style of dance, in one direction.
Answers: 3
Biology, 22.06.2019 09:00, chayiljacquet
What is responsible for the uneven heating between the poles and the equator on any given day
Answers: 3
How can a megaphone used by a cheerleader allow people on the opposite side of a field to hear her b...
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