When 2 different species are competing for a resource, in the absence of other factors, one will usually win because the competition is asymmetrical. That is because: One species usually cheats. Populations have different numbers of individuals. Different species have different morphologies (how they look) and physiologies (how they function). All of the choices are true.

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A: ANSWER;-  

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A:

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Animal Behavior

Animal behavior can be defined as all the things that animals do. In response to a stimulus, an animal performs a certain fixed action pattern, or FAP, of behavior. This response occurs to make the animal more adaptable to change. So, behavior is generally a stimulus-oriented response. A behavior is an expression of the capabilities of the nervous system. A stimulus is determined by the environment, while the nervous system determines a response.