


> Scientists called physicists use a lot of mathematics in their work. > As you can see, they use letters and symbols more often than numbers. On a desert in New Mexico, a large number of people…

The towering snow-capped Alps form a giant barrier between many countries in Europe. For thousands of years, the only way to get across the mountains was by means of passes. Travelers faced many…
Location of endocrine glands > Endocrine glands produce hormones that regulate growth, sexual > development, metabolism, and other body functions. Endocrine glands produce vital chemical…
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