Examine the ph scale in figure 15 and review the description about it.
write two facts about acids and bases and give an example of each.
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sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

well, i believe that the answer is 2. : 3