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List two biotic components of a biosphere.
Which organism has the largest variety of predators in the food web?
Name secondary consumers in the food web
Suggest three ways in which the ecosystem would be affected of there was a prolonged drought.
A lake is found fully covered with algae and scum. The water from this lake is used by people living nearby it for their household purposes. It is also found that many children are suffering from diarrhea and muscle cramps. As a precaution the doctor advises them not to drink water from the lake, and if at all they use it, it should be boiled and cooled.
What is ozone ? How is it formed in the upper layers of the Earth's atmosphere ? How does ozone affect our ecosystem ?
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