Quick Answer. Butterflies eat by sipping nectar and other liquids through their proboscis, a tubular appendage that functions like a straw. The larvae of butterflies, called caterpillars, feed voraciously on plant material, especially leaves.
Tweet. While Americans comprise only 5 percent of the world population, we consume an incredible 50 percent of Big Pharmaâs drugs, as explained in Jeff Haysâ documentary film, Doctored. Make no mistake. These drugs are meant to keep us imprisoned in poor health, not heal us. Itâs time to kick the drug habit America.
1 the United States population is equivalent to 4.38% of the total world population. 2  the U.S.A. ranks number 3 in the list of countries by population. 3  The population density in the United States is 35 per Km2 (92 people per mi2).  The median age in the United States is 38.1 years.