Final answer:
Reef balls need holes for water circulation, biodiversity, and protection.
Explanation:
Importance of Holes in Reef Balls:
Reef balls having holes rather than acting as solid walls is crucial for several reasons:
- Water Circulation: Holes allow water to flow through, preventing stagnation and ensuring oxygen reaches all parts of the reef.
- Biodiversity: The holes create habitats for a variety of marine organisms, increasing biodiversity.
- Protection: By not acting as a solid wall, reef balls are more resilient to wave action and storm damage.
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