Answer:
Human civilization changed between the Paleolithic and the Neolithic because we went from just hunting and gathering to practicing horticulture and farming. Our tool technologies also became more advanced.
Explanation:
The Paleolithic Era is also referred to as the Old Stone Age the stage in human prehistory when we first developed stone tools and the longest stage of our prehistory from around 3 million years ago until 12,000 years ago. The Neolithic is the era when humans began to practice horticulture and started domesticating some animals and plants. This covers the period from about 12,000 to around 2,000 years ago. Basically, the Paleolithic is when humans first started to use stone tools, while the Neolithic era is when humans started farming. Tools were more advanced in the Neolithic and our ancestors also lived in more permanent homes.
Answer:
The company is using callbacks.
Explanation:
Callbacks are a survey technique particular of surveys carried out by phone. They are very common in this kind of survey because less than half of the interviews take place during the first call, whether for respondent's unavainability at the time of the survey, or low interest for completing the survey at that time. Maybe the person in question prefers to be interviewed in the future.
Answer:
A two-party system is a party system in which two major political parties dominate the political landscape. In the U.S. the two political parties are known as the Democratic party and the Republican party. Whichever one typically holds the majority is usually referred to as the majority or governing party while the other is the minority or opposition party. Although around the world the term has different senses.
Explanation:
A current-controlled, three-terminal semiconductor device used for the control and amplification of electronic circuitry is called transistor
A transistor is a semiconductor device that switches or amplifies electrical impulses. The transistor is one of the fundamental components of contemporary electronics. [1] It has at least three terminals for connecting to an electronic circuit and is made of semiconductor material. The current flowing through another pair of the transistor's terminals is controlled by the voltage or current provided to one set of those terminals. Because the regulated (output) power might be higher than the controlling (input) power, a transistor can amplify a signal. Although many more transistors are found embedded in integrated circuits, some are packaged individually.
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