Emma sings into a microphone. the sound is transferred from the microphone to a loudspeaker that is plugged into the wall. her voice comes out of the loudspeaker and sounds much louder than before. in this system, sound energy is being transformed into energy and then back into energy

Why does meiosis produce cells with half the chromosomes? o a. most of the chromosomes are not necessary to keep an organism alive. b. a gamete needs only half the number of chromosomes because two gametes join together. o c. it makes the gametes easier to move around in the organism. o d. it is faster to produce gametes with fewer chromosomes.

What percentage of light hits earth's surface directly?

How do living things obtain phosphorus