Environmental Science
Which one is true?

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

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

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

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