What is often used to improve the quality of a broadcast? a. Amplification stations c. Relay stations b. Repeater stations d. Receiver stations

How do living things obtain phosphorus

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast