The place theory of hearing is better than frequency theory at explaining pitch perception for sounds.

What type of plant is good for a bioassay and where can i buy it? i only have a month.

What is the main fuel source for the work of the cell

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins