The Mexican-American War, waged between the United States and Mexico from 1846 to 1848, helped to fulfill America's "manifest destiny" to expand its territory across the entire North American continent.
<span>The right answer is "Genetic".
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</span><span>This is because genetic makeup determines the response of the immune system to certain diseases. That is, some people will be naturally more immune and tolerant to pathogens as compared to other people.
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</span><span>The genetic background refers to the biological basis that we inherited from our parents. His main area of study are genes; In the genes, it is found all the information of the structure of the cells that make up the body of a person. Variations in these genes are what determine the differences in living beings.
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I hope this information can help you.</span>
Answer:
SHANGHAI—For over three decades the Chinese government dismissed warnings from scientists and environmentalists that its Three Gorges Dam—the world's largest—had the potential of becoming one of China's biggest environmental nightmares. But last fall, denial suddenly gave way to reluctant acceptance that the naysayers were right. Chinese officials staged a sudden about-face, acknowledging for the first time that the massive hydroelectric dam, sandwiched between breathtaking cliffs on the Yangtze River in central China, may be triggering landslides, altering entire ecosystems and causing other serious environmental problems—and, by extension, endangering the millions who live in its shadow.
