Environmental Science
What is meant by ex-situ conservation?

Conservation of forest eco system
Conservation of a species by protecting its habitat along with all other species living there
Conservation of a species outside its natural habitat
Conservation of plants

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Environmental Science
How do red and blue light differ?

Blue light has a higher speed of propagation.
Red light has a higher intensity.
The wavelength of red light is longer.
Red and blue light have different directions of polarization.

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