Humans Often Build Dams on Rivers for Hydroelectric Power or Other

question 28

Essay

Humans often build dams on rivers for hydroelectric power or other purposes. Dam-building obstructs fish movement and alters fish populations above and below the dam, sometimes leading to declines in threatened species. One effect is delayed movement of fish to new locations. This increases fish densities in certain locations, resulting in greater competition for space and likelihood of spread of diseases. Fish may be slower in reaching spawning or feeding grounds, and have less energy available for reproduction and for later attempts to reach the new location. What unexpected or unintended ecological consequences would occur in this scenario?

---

Definitions:

Cash Budget

A forecast of cash inflows and outflows over a specific period, used to estimate a company's short-term liquidity needs.

Cash Balance

Cash balance refers to the amount of cash that a company or an individual has available at any given time.

Cash Payments

Cash payments refer to transactions where cash is used to settle the payment for goods, services, or obligations.

Cash Budget

An estimation of cash inflows and outflows for a business over a specific period, used for managing liquidity.