What are the most important factors in chemical weathering?
•water vapor and carbonic acid
•water and carbon dioxide
•water and soil
•carbon dioxide and chemicals in polluted air

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

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.

In the construction of new housing development, which factor of production can be categorized as land?