The salamander is an amphibian, so it has a as it grows and develops. the adult form is different from the larva because the adult .

Most countries in the middle east must import a majority of their a. gasoline b. oil c. food d. water

The earth is composed of three different chemical layers: core, mantle and crust. the formation of these layers was from a process called

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons