What is the basic unit in the 4 nitrogen bases in DNA?

What are two ways in which salt is removed from ocean water? What is the relationship between active transport and homostasis? What is the structure that represents an amide? How can water be transported from roots to leaves? What is Saturn named after and why? When do leaves normally change color in KY and tn? How are the accessory structures and GI tract structures different? What would happen to the body if the membranes got damaged in the human body? How many kilos equals 50 pounds? What is chanca piedra used for? Which part of the United states has higher elevations the southeast or the northeast? Is Widnes located in Liverpool? The common ion effect results in a? Names places where natural forces that break down rocks happens? What if your brain is involved in regulating different aspects of personality and bodily function? During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber? Whene will the world end? What level of education is needed to become a marine biologist? What is the correct electronic configuration for a ground state Gold atom Au? What wire is required for a 60A sub panel off a 150A main service?