Environmental Science - Study Mode

[#401] When number of food chains is interlocked this is called
Correct Answer

(C) food web

Explanation

Solution: The interlocking pattern of various food chains is referred as food web.

[#402] Rain water harvesting is a major method implemented for_____________
Correct Answer

(A) Water Conservation

Explanation

Solution: Rainwater harvesting has been a popular method of obtaining water for agriculture and for drinking purposes in rural homes. The legislation to promote rainwater harvesting was enacted through the Urban Development Authority (Amendment) Act, No. 36 of 2007.

[#403] The pyramid of numbers is inverted in the case of
Correct Answer

(A) parasitic food chain

Explanation

Solution: Pyramid of number indicates the number of individuals at each trophic level. The pyramid of number is inverted in tree ecosystem. In this, the the first trophic level contains least number of trees. The insects feeding on primary producer occupy second trophic level.

[#404] Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to
Correct Answer

(A) acid rain

Explanation

Solution: Burning of coal produces oxides of sulphur and nitrogen which combined with water vapor leads to acid rain.

[#405] What is deforestation?
Correct Answer

(B) destruction of forest

Explanation

Solution: Deforestation, clearance, clearcutting or clearing is the removal of a forest or stand of trees from land which is then converted to a non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests.