Jobs that turn raw materials or resources into usable finished products are part of the sector. a. primary b. secondary c. tertiary d. quaternary

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

Fossils of glossopteris, an extinct fern, were discovered on which continents to support the theory of continental drift? check all that apply.

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water