Why did you need to shake or mix the tubes at one-minute intervals?

Hey me with this one❤☺❤ how do you say that a cell also has a life span and death like an organism? give one example.

What causes the force that pushes magma from the magma chamber through the pipe and vent of a volcano?

Plz ! having a smooth seeds is the dominant trait. having wrinkled seeds is a recessive trait. the offspring of two plants with smooth seeds, a. must have smooth seeds. b. may have smooth or wrinkled seeds. c. must have wrinkled seeds. d. have a 25% change of having smooth seeds.