Which one ? A? B? C? D?

What major land feature is located at 0* and 20* e? a sahara desert b kalahara desert c congo basin d the alps

Which of the following was probably the most difficult challenge facing construction of the railroad?

Which course of action did president carter propose in order to solve this problem for the next generation? a. contract with foreign nations to build wind turbines b. reduce federal spending on solar cell energy research c. drill fewer offshore wells to conserve marine life d. develop alternative energy sources