What causes diffusion? i have a test to study for in biology and the only thing i dont get is what causes diffusion.?

Which of the following was an environmental consequence of the nuclear meltdown at Chernobyl? a. evacuation of Pripyat b. high levels of radiation c. increased CO2 levels d. none of the above

How do white blood cells move when outside of the blood stream

A/n ___ is a type of mass movement the occurs when a thin block of soil, rock, and debris spearates from the underlying bedrock

Explain how regulation of gene expression can alter gene function.

Which movement is not associated with the scapula?

Which animal group has mostly live births?

What are the stages of the plant life cycle

Which ratio between primary neuron and secondary neuron would allow for the greatest receptive field sensitivity?

Which of the following is NOT generally associated with a thunderstorm? A. tornado B. lightning C. dry air

In chickens, comb shape is determined by genes at two loci (R, r and P, p). A walnut comb is produced when at least one dominant gene R is present at one locus and at least one dominant gene P is present at a second locus (genotype R_ P_).