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.

Free previous-year papers & practice for JEE, NEET and CBSE Boards.

Free previous-year papers & practice for JEE, NEET and CBSE Boards.

Biotic and Abiotic Components of Ecosystem, Impact of Human Activities on Environment | PadhAiPro

Question

CASE_STUDIESBiotic and Abiotic Components of EcosystemImpact of Human Activities on EnvironmentCBSE PYQ3 sub-questions

"Excessive use of chemicals and pesticides in agriculture adversely effect the environment." Justify this statement.

Which of the following is not an example of abiotic factors?

Biotic and Abiotic Components of Ecosystem

List two biotic components of a biosphere.

Give an example to illustrate that indiscriminate use of pesticides may result in the degradation of the environment

Which organism has the largest variety of predators in the food web?

Name secondary consumers in the food web