<span>classic conditioning effect from the cat's past experience where it can pair the sound of the electric can opener and the food which arrives after the sound.This effect was proven by Ivan Petrovich Pavlov who conducted the experiment on dogs.He proved the theory by using a bell and feeding the dogs after ringing the bell .After few times,the dogs started to salivate just by hearing the sound of bell.</span>
<em>Answer:</em>
D. The value of what is lost when picking one choice over another
<em>Explanation:</em>
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This is because an opportunity cost is a benefit or profit of something that must be given up to acquire or achieve something else.
Answer: Canal construction.
Explanation:
Canal construction was the primary irrigation mechanism used in ancient Mesopotamia. The entire community participated in the development of these channels. Canals were built up to twenty meters wide, and they were connected to hundreds of smaller canals. In this way, the first forms of agriculture were created. With the canal's construction, the inhabitants of ancient Mesopotamia controlled irrigation, but they also brought water to areas that did not have enough water.
Shelli and Lisa are talking about "Prototypes".
A prototype is an early example, model, or exposure of an item worked to test an idea or process or to go about as a thing to be repeated or gained from, an ideal in simple words. It is a term utilized in an assortment of settings, including semantics, design, gadgets, and programming and for this situation the perfect teacher.
