Topic+5

Human Impact on Biodiversity.
Why is preserving biodiversity important? What are the "5 ways" humans are impacting biodiversity?
 * __Essential Questions:__**

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=**The 4 Es**=

• All Species on Earth are connected directly or indirectly through some kind of connection. • Services are created by nature for free. E.g. Recycling, filtering water etc. • Is it right for us to kill other species? • The beauty of nature.
 * 1. Ecological Reason**
 * 2. Economics**
 * 3. Ethical**
 * 4. Aesthetic**

=The 5 Ways=

• Harvesting faster than the ecosystem and biodiversity can reproduce. • Introduction to alien species. • 40% of world’s habitats are destroyed by human. • Not big enough to sustain the population • Simple, pollution kills. 
 * 1. Over harvesting**
 * 2. Spreading of Species**
 * 3. Destruction of Habitats**
 * 4. Islandization**
 * 5. Pollution**