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IMSO 2017 Science International - Theory I Question 4

IMSO Science · IMSO 2017 Science International - Theory I

Question 4

Food chains usually contain no more than four trophic levels because _____________________.
  1. only a single species of herbivore feeds on each plant species.
  2. predator species tend to be less diverse and fewer in numbers compared to prey species.
  3. local extinction of a species causes the extinction of the other species higher up the food chain.
  4. most of the energy is lost when organisms of the higher trophic level consumes the organism of a lower trophic level.