Answer:
The indigenous peoples of the Americas arrived in North America via the Bering Strait land bridge, which existed approximately 15,000 years ago between Siberia and Alaska, and probably also via a succession of sea migrations from Asia.
Answer:
Viruses can replicate inside cells, while bacteria release toxins to destroy cells.
Explanation:
Viruses and bacteria are both considered microorganisms that can be pathogens. Bacteria are singled celled organisms, where as viruses are non-cellular. Therefore, viruses are sometimes considered non-living, or "on the edge of life"
Viruses consist of (at the minimum) a genome surrounded by a protein coat. To replicate, they have to insert their genome into a host cell. This is another reason they are sometimes considered non living.
In contrast, bacteria can release toxins but do not replicate inside cells.
Therefore, the answer is viruses can replicate inside cells, while bacteria release toxins to destroy cells.
<span>The Global Surface Temperature is Rising
</span>NOAA states:<span>Many lines of scientific evidence show the Earth's climate is changing. This page presents the latest information from several independent measures of observed climate change that illustrate an overwhelmingly compelling story of a planet that is undergoing global warming. It is worth noting that increasing global temperature is only one element of observed global climate change. Precipitation patterns are also changing; storms and other extremes are changing as well.
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