Sound refracts from all surfaces of a room. if a room’s walls are too refractive, the sound won’t be correct

true or false?

Witch type of microscope is used to view very small cell components like proteins and dna?

Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.

Sexual reproduction in the parent cell will result in offspring with a) identical genetic information. b) half the genetic information. c) double the genetic information. d) four times the genetic information.