The energy pyramid shows a decrease moving up trophic levels. For example, when a herbivore eats a plant, it only gets a part of the plant energy, so the energy taken by the herbivore will be lesser. The same thing also happens when the carnivore animal eats herbivore animals. <span>
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To determine the reason for the fish death, do the following:
1. Test the water for the presence of organic substances that may be poisonous to the fish.
2. Test the dissolved oxygen concentration of the lake at different locations and at different depths.
3. Perform full toxicological examination of the lake to determine if any pollutant or poisonous chemical is present in the lake.<span />
Answer:
Consumptive rates are so high because water that is applied to a field is considered lost to the immediate water system. It either gets evaporated, used by the plants, or leaves the field as run-off. In addition, leaks or evaporation cause loss while water is being transported from the source to the field, often over great distances.
