Question

1.) Use ecological principles to explain why are big, fierce animals rare even in natural ecosystems. What is the result when humans remove them entirely from wild areas?

2.) Explain the 4 major human causes of extinction.

3.) Describe an ecosystem service that you use and benefit from. How would you replace this service if the organisms providing it became extinct?

4.) Research and give an example of an indicator species, an umbrella species, a flagship species and a keystone species not described in the notes. Briefly explain their importance in their ecosystems.

5.) Explain the vegetation changes during primary succession and why they happen.

I need help on these 5 questions.

Answer 1