How have islamic beliefs affected africa

The value of the next best alternative given up is called ?

What impact did improvements in farming technology near the end of the nineteenth century have on the american economy? a. more energy was needed to power equipment, creating the renewable energy industry. b. less labor was necessary on farms, leading workers to pursue other jobs. c. less money was invested in farming as many locally owned farms went bankrupt. d. more demand for agricultural products reduced the price of food and animal products.

Marcy tests a solution with a strip of blue litmus paper. the paper turns red. the solution is acidic basic neutral