Environmental Science
Which statement(s) below is/are correct?

Fog can be composed of ice crystals
Valleys are more susceptible to radiation fog than hill tops
All of these
Without the summer fog along the coast of California, redwoods would not grow well there

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Environmental Science
Biogas is composed of

ethane, carbon dioxide, nitrogen and hydrogen
methane, carbon dioxide, nitrogen and hydrogen
methane, carbon dioxide, nitrogen and sulphur
carbon dioxide, nitrogen and hydrogen

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Environmental Science
Which of the following statement is incorrect regarding ecological pyramids

The pyramid of energy is inverted in ocean ecosystem
The pyramid of biomass is inverted in aquatic ecosystem
The pyramid of numbers is upright in grass land ecosystem
The pyramid of biomass is upright in grass land ecosystem

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