Observation is broken up into three parts. The first is the date. Then you have the activity and last you have a brief description of what is being observed.
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It was concluded that the dialysis tubing doesn't allow all kinds of substances to pass readily through the pores of its membrane. This means that it is selective in its permeability to substances. The dialysis tubing was permeable to glucose and iodine but not to starch.
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Answer
Explanation:
The wind and water can break down the landscape and affect its physical formation. Water for example can break down rocks and make a ditch from 1 foot deep to 6 feet deep.
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Artery, blood vessel, human heart, circulatory system, human
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I put them in order of smallest to largest, I wasn't 100% sure that's what you wanted, but I hope this helps!
It's called chemical reaction.
(I'm not real sure)
