How many chromosomes will a zygote resulting from fertilization contain ?

What is the fate of the electrons that interact with a specimen in an electron microscope?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.

Your town is considering building a biodiesel power plant describe at least two advantages and two disadvantages