Question

reptiles and birds excrete waste as an insoluble white solid that is called uric acid. how does this help them to maintain internal homeostasis in hot climates? by retaining water by conserving energy by reducing body temperature by maintaining heart rate

Explanation:

Uric acid is a concentrated form of nitrogen - containing waste. Excreting it as a solid requires very little water compared to other forms of nitrogenous waste like ammonia or urea. In hot climates, water conservation is crucial for maintaining internal homeostasis. By excreting uric acid, reptiles and birds can reduce water loss during waste excretion.

Answer:

by retaining water