Receptors that provide animals with information from the external environment are located in the
ears
skin
blood vessels
joints
tongue
eyes
muscles
nose

Receptors which provide animals with information from the external environment are located in ears, tongue, eyes, and the nose. These are all receptors that can be found in our sensory organs and provide us with feedback from our nearby environment and the stimuli on which we should be alerted towards. 

Receptors that provide animals with information from the external environment are located in the
ears
tounge
eyes
nose

Cbecause it is the only one describing a habitat