Classifying and Conserving Life-biology.pptx

Classifying and Conserving Life

1. Classifying and Conserving Life

2. What is living things? What is organism? What are the characteristics of life?

3. Cell is the basic unit of life. Types of Cell Unicellular Multicellular

4. Characteristics of Life Ability to grow and develop Ability to reproduce Ability to response to stimuli Ability to breath Ability to move Ability to use energy

5. What is Biodiversity? Biodiversity is the diversity of life in an area . There are three kinds of biodiversity . genetic diversity which is the diversity of genes in a species . Species diversity is the variety of living things in areas such as rainforests, reefs, deserts , tundra, etc. ecological diversity is the complexity and richness of an entire ecosystem. 

6. Here are some of the major ways biodiversity helps humans: Plants absorb greenhouse gases and help stop global warming. It is easier for biodiverse ecosystems to recover from natural disasters. Healthy biodiversity of species can provide a variety of food (like meat and produce).  Many of our medicinal drugs come from plants .

7. All of our wood products come from nature. We can learn more about our earth by observing a diverse ecosystem. Many recreational areas benefit from a healthy ecosystem, which promotes tourism. Biodiversity is beautiful and should be enjoyed .

8. What Are the Threats to Biodiversity?     There are a lot of threats to biodiversity. We have links to almost all of these on our Threats  page. Here are some of the major threats: Using up natural resources before they can be renewed (over-fishing in oceans, or over-harvesting trees on land .

9. Habitat destruction like clearing forests or draining wetlands for towns or agricultural purposes Releasing invasive species into foreign ecosystems (like the cane toad in Australia or the zebra mussel in the Great Lakes) Any kind of pollution (water, air, soil, etc ). Failure of food chains