Environmental Science
Which of the following is false?

Quantity of biomass in a trophic level at a particular period is called as standing crop
The energy content in a trophic level is determined is determined by considering a few individuals of a species in that trophic level.
Rate of succession is faster in secondary succession
The succession that occurs in newly cooled lava is called primary succession
Phytoplanktons are the pioneers in the aquatic ecosystem

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Environmental Science
Which one is true?

symbiosis when neither population affects each other
commensalism when the interaction is useful to both the populations
symbiosis when the interaction is useful to both the populations
commensalism when none of the interacting populations affect each other

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Environmental Science
Infrared and visible satellite images might provide:

A way of identifying clouds suitable for cloud seeding.
A way of distinguishing between "new" and "old" clouds.
A way of distinguishing between wet and dry clouds.
A way of determining cloud thickness and altitude.

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