Ask your own question, for FREE!
Biology 21 Online
OpenStudy (anonymous):

Many cat species mark their territory by rubbing glands on their faces against a surface such as a tree trunk. This form of communication relies on a A. visual signal. B. sound signal. C. chemical messenger. D. defensive display.

OpenStudy (anonymous):

Chemical Messenger

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!