Home
Search
Create
Library
Topics
Student
Teacher
Admin
Map
Sign in for more features
YourStory
Home
Search
Create
Library
Topics
Student
Teacher
Sign in
Feedback
Contact Us!
Assessment
What is the primary source of pollution in freshwater ecosystems?
Agricultural runoff
Urban development
Industrial waste
All of the above
Which of the following is an effect of invasive species on freshwater ecosystems?
Increased biodiversity
Disruption of food webs
Improved water quality
Enhanced recreational opportunities
What human activity has the most direct impact on freshwater habitat degradation?
Fishing
Damming rivers
Boating
Swimming
Submit