Examlex
Mammals that lay eggs are called ____________________ mammals.
Chemosignals
Chemical signals that convey information between organisms; they play key roles in many biological processes and behaviors.
Biochemicals
Molecules that constitute the chemical substances and processes occurring within living organisms.
Olfactory Mucosa
The specialized epithelial tissue inside the nasal cavity that houses the olfactory receptors, crucial for the sense of smell.
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