Environmental Science
According to Wein's displacement law, the wavelength at which maximum radiation occurs

Is inversely proportional to the temperature
Is inversely proportional to the pressure
Is proportional to the temperature
Is proportional to the pressure

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Environmental Science
What is the official name of IUCN?

International Union for Conservation of Nature and Natural Resources
United Nations Environment Programme
World Wide Fund for Nature
United Nations Educational, Scientific and Cultural Organization

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Environmental Science
Definition of ecosystem is

The abiotic component of a habitat
A community of organisms interacting with one another
The community of organisms together with the environment in which they live
The part of the earth and its atmosphere which inhibits living organisms

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