Earth's Living Networks Quiz
A brief challenge that examines how organisms and environments intertwine across diverse habitats.
Quiz Questions
Answer all questions below and test your knowledge.
- 1
Which microscopic organism forms the base of most oceanic food chains?
- 2
Which animal most commonly acts as a keystone predator that controls deer numbers in temperate forests?
- 3
In most land ecosystems, which organisms fix atmospheric nitrogen into plant‑available forms?
- 4
What process in marshes most directly eliminates excess nutrients from water?
- 5
Which adaptation enables cacti to retain large water reserves during drought?
- 6
Eliminating which predator usually triggers a surge in sea urchin numbers, harming kelp forests?
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