The cause of loss of forest cover is

(1) Agriculture

(2) Building Industry

(3) Increasing population

(4) Tourism & pilgrimage

'Green House Effect' means

(1) Pollution in houses in tropical regions

(2) Trapping of solar energy due to atmospheric oxygen

(3) Trapping of solar energy due to atmospheric carbon dioxide

(4) Cultivation in greenhouses so as to check pollution

A natural region has the similarity of

(1) climate and natural vegetation

(2) climate and occupation

(3) soil and drainage

(4) economic base and recess

Global warming is expected to result in

(1) Increase in the level of the sea

(2) Change in crop pattern

(3) Change in the coastline

(4) All of the above

Man can maintain an ecological balance in the biosphere by

(1) deforestation

(2) developing new breeds of cultivated plants and domesticated animals

(3) using insecticides and pesticides

(4) understanding of the delicate balance in the relative number of organisms

Which of the following exhibits unidirectional flow in an ecosystem?

(1) Light

(2) Energy

(3) Water

(4) Biomass

Rubber plantations are found in

(1) Temperate forests

(2) Mountain regions

(3) Polar regions

(4) Equatorial regions

“Tidal forest” is otherwise called :

(1) Evergreen forest

(2) Monsoon forest

(3) Mangrove forest

(4) Coniferous forest

All the ecosystems taken together in a geographical area form a bigger unit called:

(1) biosphere

(2) territory

(3) biome

(4) community

The word Biosphere refers to :

(1) Zone of soil, water, and air around earth capable of supporting the flora and fauna.

(2) Part of the earth surface which can support the flora

(3) Parts of air around earth where life can exist

(4) Zone of water on earth which can support life

Which of the following metals contribute to the biomagnification problem in the ecosystem?

(1) Mercury

(2) Chromium

(4) Copper

(4) Lead