If someone blows a puff of air into your eye, you will reflexively blink. no one had to teach you to blink when air hits your eye; this is a natural response that you perform. the puff of air is a(n) and blinking is a(n)

The puff of air is an unconditioned stimulus, and blinking is an unconditioned response.

Explanation:

An unconditioned stimulus is the trigger for an unconditional natural and automatic response. In other words, all the action that will result in an automatic response, such as the puff of air, before the automatic blinking response.

An unconditioned response is that reaction we do without having learned it from anyone, but it comes out automatically and naturally. This action always arises after an unconditioned stimulus.

Some examples of this interaction between stimulus and response can be: when we burn when we touch something hot and take out our hand, when we cry when we cut onion, or jump when we hear a loud sound.

This concept was discovered by Russian physiologist Ivan Pavlov.

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he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?