Impacts of Human Activities in an Ecosystem

1. Which of the following is one advantage of biodiversity in an ecosystem?

• A.                 It guarantees that the largest organisms will dominate the area. 

• B.  It ensures a large amount of identical genetic material.

• C.  It develops relationships between organisms that are always positive over long periods of time. 

• D.    It increases the chance that some organisms will survive a major change in the environment.

2. Which of the following will happen if untreated waste water will be directly spill in to rivers, sea and lakes?

• A.                  It will contaminate.

• B.       It will pollute.

• C.     It will spread diseases.

• D.   All of the above.

3. Which of the following activities will benefit lake and river ecosystems most?

• A.  By compost food waste.

• B.  By recycling non-organic materials.

• C.  By switching to phosphate-free detergents.

• D. By reducing consumption of all household goods.

4. Which of the following are the negative effects of human environmental impact?

• A.  habitat loss, increased food availability, and over population

• B. decreased food availability, habitat fragmentation and decreased invasive species

• C. habitat consolidation, obesity, and over population

• D.  habitat fragmentation, starvation, habitat loss, and extinction

   

5. Ecotourism is becoming a very popular vacation option. Unfortunately, ecotourism can have negative effects on the ecosystem involved. Which choice is a possible positive ecological effect of ecotourism?

• A. Infrastructure, such as electricity, water and sewage, can be supplied to native people as well as tourists.

• B. Jobs in the tourism industry can be created for the people living in the tourist zone.

• C. Ecotourism can provide much needed income for poorer countries.

• D. Tourists may care more about saving an ecosystem they have personally experienced and enjoyed.

6. What human activity is depicted in the image?

7. What are its effects in the environment?

8. What human activity is depicted in the image?

9. What are its effects in the environment?

10. What human activity is depicted in the image?

11. What are its effects in the environment?

12.What human activity is depicted in the image?

13. What are its effects in the environment?

14.What human activity is depicted in the image?

15. What are its effects in the environment?