Which adaptation minimizes energy expenditure during thermal soaring?

💡 Explanation

The pneumatic air sac system expansion allows greater buoyancy and reduces wing loading because increased volume enhances lift. This minimizes need for flapping and expenditure of energy; therefore it helps in soaring, rather than muscle adaptations which support powered flight.

• Which consequence results when seasonal temperature shifts disrupt geomagnetic alignment during salmon spawning migrations?
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• Which outcome results when plants with C4 photosynthesis experience thermal stress?
• Which limiting developmental consequence occurs when hormone ecdysone pulses fail during insect larval stages?
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