The Three Economic Sectors. According to the three-sector theory, all economic activity can be classified into one of three sectors: the primary sector, the secondary sector and thetertiary sector.
The primary reason for why native peoples in california remained hunters and gatherers for hundreds of years after europeans arrived in the western hemisphere was because Both land and ocean provided an abundant food supply and resources.
human evolution is the process where humanbeing evolve according to the needs , so when there will be plenty of natural resources , then their basic needs get fulfilled by existing natural resources so they never tried to evolve themselves.
paleo-indians were living in an isolated continent , there was no fear of military attack , food scarcity, population migration , etc and there was no need for agriculture because they can get food from forest, river, ocean, etc. and their demand gets fulfilled by available natural resources , so they never tried to expand their research and never tried to adopt alien culture.
so even after hundred years of European arrival the native people of california remained hunter and gatherer.
to know more about paleo-indians click here
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<span>A new immigrant from Mexico learns how to speak English after enrolling in an American school.</span>
Answer: "More frequent and intense drought, storms, heat waves, rising sea levels, melting glaciers and warming oceans can directly harm animals, destroy the places they live, and wreak havoc on people's livelihoods and communities. As climate change worsens, dangerous weather events are becoming more frequent or severe."
Explanation:
"What is the biggest threat of global warming?
The threats include harm or death from increasingly frequent extreme weather events such as heat waves, storms and floods, as well as the disruption of food systems, the spread of diseases from animal populations, food- and water-borne illnesses, related mental health issues and more."
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