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What is 1 + 3?
Social Studies Chapter 1 (lessons 3, 4, and 5)
water, as in rain, sleet, or snow, that falls to the Earth's surface
an imaginary line that runs through the Earth from the North Pole to the South Pole
trip around the sun
the amount of moisture in the air
something that people make or grow, usually to sell
a natural substance found in rocks
a natural resource used to make heat or energy
workers and the ideas and skills they bring to their jobs
the making of goods
an activity that people do for others, such as caring for their health, fixing their cars, cleaning their houses, or delivering their mail
the way people in a state, a region, or a country use resources to meet their needs
protecting our natural resources and using them wisely
anything that makes a natural resource dirty or unsafe to use