What are the dense evergreen forests of the Western Ghats called?
(A) Aranyaka
(B) Sola
(C) Tega
(D) Selva
What causes water pollution?
(A) by the addition of salts
(B) Industrial extracts
(C) by the destruction of the body of aquatic animals
(D) by rain
Who is most responsible for world climate change?
(A) Increase of Green House Gases
(B) lack of rain
(C) nuclear weapons
(D) Population growth
Which gas contributes the most to greenhouse gases?
(A) CFSs
(B) carbon dioxide
(C) nitrous oxide
(D) Methane
What are the shortest living greenhouse gases?
(A) CFSs
(B) carbon dioxide
(C) Methane
(D) nitrous oxide
Which industry emits maximum nitrous oxide gas?
(A) Nylon
(B) Cement
(C) cloth
(D) paper
What is formed by chemical reaction only?
(A) Methane
(B) CFSs
(C) carbon dioxide
(D) nitrous oxide
What is the biggest threat to the survival of the living beings present on the earth?
(A) Radiation
(B) Desertification
(C) Deforestation
(D) Glaciation
How does forest help in controlling drought?
(A) Forests prevent soil erosion.
(B) Rainfall comes from forests.
(C) Many aquatic plants are found in forests.
(D) Forests act as water cover.
Which of the following is an independent nitrogen-fixing bacterium present in the soil?
(A) Azotobacter
(B) Nitrosomonas
(C) Rhizobium
(D) Pseudomonas
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