What is it called when particles move across a membrane/barrier? Unbalance
Balance
Osmosis
Diffusion

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d

How can we use spectral lines of light coming from the superclusters to identify which is receding from earth at the slowest rate.