Examlex
By the 8th week, when the woman usually realizes she is pregnant, all the baby's essential organs are in place, including heart, brain, nose, lips, ears, and limbs, and the baby is responsive to touch.
Dominance Hierarchy
A social structure in animal groups where individuals are ranked according to their access to resources or dominance.
Chemical Communication
The transfer of information from one organism to another through the release and detection of chemical signals.
Auditory Communication
The exchange of information through sounds, significant in many species for coordination, alarm signals, and social interaction.
Pheromones
Chemical substances produced and released into the environment by an animal, affecting the behavior or physiology of others of its species.
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