Answer:
d. all of the above
Step-by-step explanation:
All the given choices are correct reasons why the building of dams could affect the earth system.
A dam is an artificial water body made by man for specific purposes.
- When a dam receives too much water, some of the storage water are released and this often cause flooding of nearby areas including forests and residential places.
- Also, dams affects the life of aquatic organisms. It impacts the spawning of migratory fishes and often times, there is a loss of aquatic life during dam construction.