Multiple choice

Coral reefs are found in shallow warm water of the _______.

  1. Hydrosphere

  2. Gulf stream

  3. Lithosphere

  4. Tropic

  5. Arid region

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Coral reefs require shallow, warm, tropical waters to thrive, typically found between 30°N and 30°S latitudes. These conditions provide optimal sunlight for photosynthesis by zooxanthellae algae living in coral tissues. The tropics offer the stable warm temperatures (23-29°C) and clear shallow waters that corals need for growth and reef formation.