ANSWER:
Biomass is a fuel that is produced from all the organic materials made by plants and animals. It is used as an energy source for many domestic purposes. The most common biomass materials used for energy are plants, wood, and waste. Biomass can be burned to create heat, converted into electricity, or processed into biofuel. Biomass can be burned by thermal conversion and used for energy.
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It is called surface currents.
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
brainly.com/question/13188060
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Hello There! ^_^
Your question: What were the three main Indian groups before European explorers arrived..?
Your answer: The Mayan, the Aztecs and the Incas were the three main Indian groups before European explorers arrived.
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