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polet [3.4K]
3 years ago
10

_____ are chemical signals that, instead of being secreted into the bloodstream, are introduced by animals into their habitats.

they can be used to attract mates and mark territories.
Biology
1 answer:
Oduvanchick [21]3 years ago
5 0
Pheromones is your answer. Pheromones are hormones that can act outside of the body - they they are mostly used by humans and insects in order to attract mates. There are several different pheromones, in fact, that have an effect on behavior.
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