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Which of the following is a source of economic growth?
Stomata
Small openings on the surface of leaves and stems that allow for gas exchange.
Humidity
A measure of the amount of water vapor in the air, affecting weather, climate, and comfort levels.
Chemical Signals
Molecules released by organisms to communicate with each other, playing critical roles in behaviors such as mating, aggression, and territory marking.
Hormonal Messages
Signals transmitted within the body by hormones, which are chemical messengers secreted by endocrine glands to regulate physiological processes.
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