Task #1Identify each organism on each numbered slide.

Task #2Identify each organism’s pollution tolerance on each numbered slide as:“sensitive” ( sensitive = not tolerant to pollution) “somewhat sensitive” (somewhat tolerant to pollution)“not sensitive” (tolerant to pollution)

#1

#2

#3

#4

#5

#6

#7

# 8

# 9

# 10

# 11

# 12

# 13

*sometimes this macroinvertebrate builds a “house” of pebbles or twigs