Your group has just collected and identified the following organisms:
22 crane fly larvae, 15 midges, 4 dragonfly nymphs, 10 sowbug, 11 aquatic worms, 33 caddisfly larvae, 4 waterpennies, and 1 left handed snails.
what is the pollution tolerance index value?
a. 1.0 = excellent water quality
b. 2.1= good water quality
c. 2.4 = good water quality
d. 2.5 = good water quality

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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