Net movement of particles from an area where there are many particles of the substance to an area where there are fewer

What maintain homeostasis when a persons internal body temperature is 97.5°f

(amoeba sisters video recap: pedigrees and need

Which scientific design has both practical limitations and limitations due to scale? studying the effect of bleach on the growth of mold spores exposing cultures of duckweed to different intensities of light observing the replication of dna molecules with a hand lens using colored marbles to model a cross between two colors of rabbits