change in biodiversity

1- What conclusion can be drawn about change in biodiversity by studying bird and butterfly population in the UK? (300 words With one reference)
2- How strong is the evidence that species are currently becoming extinct at very high rate?(300 words With one reference)
3- What are the strengths and weakness of the various conservation strategies currently being used to reduce biodiversity loss?(300 words With one reference)

4- Explain the major patterns of biodiversity, including the biogeography of island? (300 words With one reference)
5- What factors are responsible for the patterns of biodiversity seen on Earth today?? (300 words With one reference)

6- How strong is the evidence that we are currently experiencing the “Sixth Extinction” of biodiversity?(300 words With one reference)
7- Why does earth have so many species, and are they all needed for ecosystem?(300 words With one reference)

8- The theory of island biogeography is described as one most important concepts in ecology and evolution. Discuss.(300 words With one reference)

9- Discuss why invasive species re usually a problem for the ecosystem they invade. Illustrate your answer with the use of two species.(300 words With one reference)
10- What are the problems caused by lack of data in our attempts to understand changes in biodiversity?(300 words With one reference)

11- What are they likely effects of climate change on biodiversity?(300 words With one reference)
12- Will conservation be able to halt the worldwide decline in biodiversity?(300 words With one reference)