Answer:isa. an unconditioned stimulus.
Explanation:
According to classical conditioning , the unconditioned stimulus (UCS) is the one in which our response occurs naturally , automatic and unconditionally which means we don't learn how to respond.
For example a smell of your favourite pizza will immediately make you feel hungry because it actual triggers this automatic response from you. The smell of food is the unconditioned stimulus.
In Ivan Pavlov's classic experiment with dogs, when the dog smell their food , the salivating that result from them is an unconditioned response and food is the unconditioned stimulus, it an unlearned response that takes place naturally. This is the same as the meat powder above , which is the dog food.
Silk Road:
The Silk Road specifically refers to the trading land routes that connects East and Southeast Asia to South Asia and Persia followed by Arabian Peninsula, East Africa and finally Southern Europe.
This network was regularly used from 130 BCE and part of that road is still in existence as a paved highway that connects Pakistan and the Uygur.
Chinese are the one who first started trading in this road and as its name indicates it is mainly used as a trade route for trading silks.
Hence this ancient road played a major role on times when it was constructed.
A famine<span> is a widespread scarcity of </span>food,<span> caused by several factors including </span>crop failure<span>, </span>population imbalance<span>, or government policies. </span>
Yes, Because Google owns many popular multimillion online platforms like youtube, etc.