Which of the following is a likely consequence of falling relative humidity in a biological environment?

Analyze the options provided: Falling relative humidity would not increase fungal growth, as fungi generally thrive in moist environments. It would also not lead to greater condensation on leaves, as condensation occurs when humidity is high. Decreased transpiration in plants is unlikely because drier air typically increases transpiration rates.

Focus on the correct biological consequence: Falling relative humidity increases the rate of water loss from organisms due to evaporation. This is because the drier air creates a stronger gradient for water to move from the organism to the environment.