Advertisements
Advertisements
Question
What causes waterborne diseases? Name two waterborn diseases.
Solution
Phosphates and Nitrates from fertilizers, industrial effluents.
E.g. Arsenic, Mercury, Cadmium, Lead, etc. Gastrointestinal problems, typhoid, etc.
APPEARS IN
RELATED QUESTIONS
The Biological/technical term for The process causing an undesirable change in the environment
Following is a statement about pollution. Which type of pollution does it express?
Crop does not grow up in some areas.
Read the passage and identify the sentences expressing types of pollution.
Nilesh is a student of Std. VII and lives in urban area. It takes about an hour to go to the school by bus. He faces the heavy traffic of two wheelers, four wheelers, rickshaws, buses while going to school. He is facing the problem of asthma since last few days, Doctors recommended him to stay away from urban area. Since then, his mother sent him to the village of his maternal uncle, Nilesh saw the heaps of garbage at many places in village. Foul smell of human and animal wastes was present at many places. Blackish water with foul smell was flowing in a stream. He developed some abdominal disease within few days.
What is known as smog? What harm is done by smog especially in winter?
What is the connection between urbanisation and air pollution?
Distinguish between the following :
Natural Pollution and Anthropogenic Pollution
With reference to pollution, explain the following:
Water pollution
Explain with examples the difference between the primary and secondary pollutants.
Certain toxic gases from industries mix with raindrops and make rain unusually acidic.
An undesirable change in the environment is called as ______.