Environmental Science
What is Carcinogen?

Cancer causing agent
Food colourants
Drugs used for curing cancer
Drugs for curing infectious disease

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Environmental Science
A red shirt

Selectively scatters red wavelenghts of visible light and absorbs the rest
Selectively absorbs red wavelenghts of visible light and scatters the rest

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Environmental Science
A food web is

The tropic (feeding) levels that can be observed in an ecosystem
The set of prey species that are consumed by animals in an ecosystem
Like a food chain
A set of interconnected food chains, illustrating the tropic relationships among species

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