Examlex
By pairing the ringing of a bell with the presentation of meat,Pavlov trained dogs to salivate to the sound of a bell even when no meat was presented.In this experiment,the ringing of the bell was the __________.
Nicotine
An addictive substance found in tobacco, acting as a stimulant in low doses and a relaxant in higher doses, affecting the nervous system.
Nectaries
Glandular structures in flowers or leaves that secrete nectar, attracting pollinating animals or insects.
Germination
The process by which a plant grows from a seed, involving the emergence of a seedling after a period of dormancy.
Internal and Environmental Factors
Variables or influences from within an organism and its external environment that affect its behavior, development, or survival.
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