List water pollutants.
Some water pollutaants are :
(i) Microorganisms e.g., protozoans, bacteria and viruses
(ii) Eggs or larvae of disease causing vectors like mosquitos.
(iii) Oil spills.
(iv) Fertilizers and pesticides.
(v) Radioactive wastes.
(vi) Industrial wastes.
(vii) Sewage disposals and domestic wastes.
What is biotic component?
Does there exist any relationship between the climate and biotic components? If yes, explain with example.
What percentage of oxygen and nitrogen is present in the air?
Name the pollutants by which industries pollute air.
How is balance of carbon dioxide and oxygen maintained in the environment?
What is the percentage of carbon dioxide in the atmosphere of Venus and Mars?
What are the two main ways in which oxygen is consumed and carbon dioxide is produced?
What are the two ways in which carbon dioxide is fixed to keep its percentage almost constant?
What is the role of the atmosphere in climate control?
What are the two factors that cause changes in our atmosphere?
Mock Test Series
