Scientists can measure water pollution with all sorts of devices. How can we estimate the degree of water pollution by
looking at macroinvertebrates in the water?
What will be an ideal response?
Certain macroinvertebrates cannot survive in polluted water. Other species thrive in polluted water. If you sample
the macroinvertebrates in a body of water and find mostly pollution-intolerant species, the water is probably pretty
clean. If only pollution-tolerant species are present, the water is likely very polluted.
You might also like to view...
_____ feathers appear as the hairs on chickens that have been plucked of their contour and down feathers
A) ?Powder-down B) ?Contour C) ?Filoplume D) ?Fight
When you are digging, how can you tell when you have reached the subsoil layer?
What will be an ideal response?
What type of oil pressure safety switch is used on many semi-hermetic compressors?
a. Fixed input b. Differential pressure c. Dynamic pressure d. Bypass pressure
____ are available as fasteners to provide a stop or shoulder for holding bearings or other parts on a shaft.
A. Internal retaining rings B. External retaining rings C. External taper pins D. both a and b E. none of the above