Science - Unit 8 - Biodiversity And Human Impacts

What is biodiversity?

Biodiversity is made up of the diversity of ecosystems, the diversity of living organisms and the diversity of genetic information these organisms have. Students will able to describe the 4 categories of ecosystem services to be; supporting services (creation of habitat, cycling of essential substances, pollination), provisioning services (provision of food, materials, fuel, medicines), regulating services (decomposition of waste, control of climate, carbon storage, flood protection) and cultural services (enjoyment, recreation, tourism, education).

What are the biggest threats to biodiversity?

Major threats to biodiversity include; destruction of habitats, pollution, loss of genetic variation. Students will be able to describe the affects of reduced genetic diversity within the gene pool of a species to be; increased risk of extinction due to disease, genetic mutations due to inbreeding- less likely to adapt to changing conditions in the environment.

What positive impacts can humans have on biodiversity?

Humans can interact positively with the environment to protect ecosystems. Examples include; conservation programmes, cleaning lakes/seas and using resources in a sustainable manner. Students will know that everyone has a personal responsibility to protect the environment.

How is biodiversity beneficial?

1. Ecosystem Services: It supports ecosystem functions like pollination, nutrient cycling, and water purification.

2. Food Security: A diverse range of species ensures a stable food supply and resilience against pests and diseases.

3. Medicinal Resources: Many medicines are derived from plants and animals, highlighting the importance of diverse species for healthcare.

4. Cultural Value: Biodiversity enriches cultures and provides recreational opportunities.

5. Climate Regulation: Diverse ecosystems help mitigate climate change effects by sequestering carbon.

Overall, biodiversity is essential for a healthy planet and human well-being.