由2 3 4 5 7 排成的的四位數中,2的倍數有幾個?

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The lines marked by the letters a, b, and c on the map above represent a. chains of volcanoes b. earthquake fault lines c. thin strips of heavy forests d. major rivers that flow from north to south

One disadvantage that darwin faces today is w. enemy attacks x. natural disasters y. lack of land bridge z. high population density

Choose the false statement. a. some organisms fossilize when frozen or dried out. b. bacteria can destroy dead plants and animals. c. it is common for a plant or animal to fossilize when it dies. d. rapid burial under small-sized sediment increases the chance for fossilization to occur.