Answer to Question 1Sample the macroinvertebrates using a trap of some kind. Small hand-held nets (like a butterfly net) are sometimes
used. Pollution-intolerant species populations are reduced in polluted water, as compared to pollution-tolerant
species, which maintain normal levels.
Answer to Question 2One way of classifying macroinvertebrates is in terms of their reaction to pollution. Using this system, we can
classify macroinvertebrates into three groups.
Group 1 organisms are pollution intolerant and easily killed by impurities in the water.
Group 2 organisms are somewhat pollution tolerant and can survive in slightly polluted water.
Group 3 organisms are pollution tolerant and can survive in all but the most heavily polluted water.
The discovery of aquaporins, water channels made of a transmembrane protein.
Cade and colleagues discovered a way to improve athletic performance and prevent salt and water imba
Lake position in the landscape and proportion of water received as groundwater (data from Webster et
Walruses leaving the water
Vapour-liquid equilibrium acetone + water
Introduction of Water to Mantle Rock