Answer:
Cold water holds more oxygen.
Step-by-step explanation:
1. Cold water can hold more dissolved oxygen than warm water. In winter and early spring, when the water temperature is low, the dissolved oxygen concentration is high. In summer and fall, when the water temperature is high, the dissolved-oxygen concentration is often lower.
2.The solubility of oxygen decreases as temperature increases . This means that warmer surface water requires less dissolved oxygen to reach 100% air saturation than does deeper, cooler water. Dissolved oxygen will increase as pressure increases .