Answer: the species of an ecosystem.
- A the species of an ecosystem
- B the passengers on the plane
- C non-living abiotic factors
- D the flow of energy in food
Correct answer: A. the species of an ecosystem
Explanation: In the analogy the aeroplane is the ecosystem and each rivet is a species; popping rivets (losing species) weakens the ecosystem, and loss of key species is disastrous.
Concept context
Levels of biodiversity, species richness patterns, threats (HIPPO), and conservation strategies. Always in NEET.