How does each cell accomplish a wide variety of activities?
a. the plasma membrane divides up the tasks.
b. all cell parts are similar.
c. molecules are transported in and out.
d. the organelles have specialized functions.

Is snow a type of precipitation? explain why or why not.

The two tubes contain bromothymol blue. after 24 hours, what will the color of the water be in tube b? a. green (it won't change) b. yellow c. blue d. colorless (clear)

How do the sperm cells get from the stigma to the ovules? a. they slide down the petals to the bottom of the flower. b. they travel through pollen tubes. c. they travel along filaments. d. insects carry the sperm cells from the stigma to the ovules.