Indigenous<span> cultures shaped, and were shaped by, the </span>geography<span> of North America. The first North Americans are believed to have </span>migrate<span>d from Siberia, in northeast Asia, by crossing a </span>land bridge<span> over the Bering Strait. These populations fanned out southward, to present-day Florida, California, Mexico, and Central America. </span>
<span>The Olmec and the Maya, indigenous to Central America, built the first cities on the continent, eventually leading to the great urban areas of Tenochtitlan, Texcoco, and Tlacopan. These cities, in what is now central Mexico, boasted </span>sophisticated engineering<span> structures, such as </span>canal<span>s, apartment buildings, and </span>irrigation<span> systems. </span>
<span>Many of these early North American cultures were scientifically and agriculturally advanced. Mayan calendars and </span>almanac<span>s recorded </span>celestial<span>events such as </span>eclipse<span>s and </span>seasonal<span> changes. The Mayans were also mathematically advanced. Their counting system was able to represent very large numbers using only three symbols: dots, lines, and a football-shaped symbol that indicated a zero. The Mayans were, in fact, the first culture to have a written symbol for zero. </span>
<span>Cultures throughout southern North America harvested corn, squash, and beans in regular cycles. This sort of </span>agriculture<span> allowed major </span>civilization<span>s to develop. People were no longer bound to produce food and shelter for their families—some people could work in the food and construction industries while others became engineers, artists, and political leaders. Leading North American civilizations include the Maya and Aztec, in what is now Mexico, and the Iroquois, native to southeastern Canada and the northeastern United States. .................</span>
It is known as civic or civil inattention. It is the method whereby strangers who are in close vicinity exhibit that they are mindful to one another without imposing on each other - an acknowledgment of the claims of others in terms of public space and their own personal space.
The gas molecules are free and float around whereas liquid atoms are bonded but are able to move freely as long as they are touching each other. These two substances are different to a solid substance because the molecules or atoms will not not be tightly bound together.
Answer: worse on tasks involving either the phonological loop, visuospatial sketchpad, or central executive.
Explanation: Working memory is central to the functioning of the mind. It is the ability to remember and use relevant information while in the middle of an activity. Working memory allows for the manipulation of stored information.
For example, listening to a sequence of events in a story while trying to understand what the story means.
Depression is a state of mind producing serious, long-term lowering of enjoyment of life or inability to visualize a happy future.
One with depression is incapable of utilizing their working memory perfectly well.
<span>Environmental variation. Our genetic make-up,
the sum total of our genes, is called a genotype, but the
characteristics which show up in our appearance are called a phenotype.
Genotype and phenotype. Genetic variation gives rise to differences between individuals that are inherited.</span>