Receptor specificity Physical energy such as light, sound,
and heat is detected by specialized receptor cells in the sense
organs—eyes, ears, skin, nose, and tongue. When the action potential that
relays information about the stimulus through the nervous system to the brain. Sensory
receptors take in information from the environment, creating local electrical
currents; These currents are graded.
Variation of trainers HELP species.
Animals defend their territories because it’s kinda a instinct and they want to be in charge
It allows the scientist to determine the age of the rock it is in
