Question

dams were constructed on oklahomas rivers throughout the 1900s for all of the following reasons except _. a. to generate electricity b. to help control flooding c. to improve navigation d. to improve ecosystems please select the best answer from the choices provided

Explanation:

Dams are often built to generate electricity (hydro - power), control flooding by regulating water flow, and improve navigation by creating deeper and more stable waterways. However, dams can have negative impacts on ecosystems such as disrupting fish migration, changing water temperature and quality, and altering habitats. So improving ecosystems is not a typical reason for dam construction.

Answer:

D. to improve ecosystems