Based on the apparent jigsaw-puzzle fit of some of the earth's largest landforms, especially africa and south america, scientists have proposed that about 200 million years ago the continents were once joined together in a supercontinent called

Which of the following statements is true? a. there is not enough food produced in the world to feed everyone. b. the biggest cause of hunger and malnutrition is the cost of getting food to people who need it most. c. most countries have enough arable land and resources to feed their own population and export a surplus d. malnourishment is only seen in a few countries with very limited food supplies.

Bottle deposit programs are one way to encourage higher recycling rates. explain how they work

The pacific plate is an oceanic tectonic plate. how did a hot spot and the pacific plate interact to form the hawaiian islands?