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BIO NMDCAT Biological Importance of Water
nmdcat.online June 27, 2026

Among the following statements, the one that correctly explains the thermal stability of aquatic habitats is

A. Water has a low thermal conductivity, trapping heat at the surface
B. The high latent heat of fusion of water causes immediate freezing
C. Water has a high specific heat capacity, buffering against rapid temperature changes
✓
D. The high vapor pressure of water in a closed system prevents heat absorption

📝 Explanation

Large bodies of water absorb solar energy during the day and release it slowly at night without large temperature swings. This property, due to the extensive hydrogen bonding network, protects aquatic organisms from thermal shock and provides a stable environment.

📖 Additional Information

  • Water has a low thermal conductivity, trapping heat at the surface
  • The high latent heat of fusion of water causes immediate freezing
  • Water has a high specific heat capacity, buffering against rapid temperature changes
  • The high vapor pressure of water in a closed system prevents heat absorption

Large bodies of water absorb solar energy during the day and release it slowly at night without large temperature swings. This property, due to the extensive hydrogen bonding network, protects aquatic organisms from thermal shock and provides a stable environment.

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