Degradation of flora and fauna habitats

Prior to about 40,000 BC humans were probably confined to the 'great world island' of Africa and Eurasia, together with Australia and parts of the Indonesian archipelago. Migration into the Americas began about that time, across a land link on the site of the present Bering Strait. The crossing of wider ocean passages to remote islands took place last of all. Over the centuries, the impact of man on terrestrial biota—the natural living resources of the continents—changed not only as a result of this progressive spread, but also as man's tools and technologies advanced and his needs escalated.

1. All creatures are susceptible to stress and panic when their natural habitat is threatened.

1. Natural environment degradation
2. Lack of environmental conservation

1. Threatened urban wildlife habitats
2. Threatened agricultural wildlife habitats
3. Simplification of habitat
4. Over-cultivated gardens
5. Natural environmental degradation from recreation and tourism
6. Fragmentation of natural habitat
7. Disturbance to wildlife patterns of movement
8. Destruction of wildlife habitats
9. Destruction of sandy inlet habitat

1. Vulnerability of ecosystem niches
2. Threatened species of living organisms

1. Unjustified culling of wild animals
2. Unethical practice of the life sciences
3. Undervaluation of nature in planning and decision making
4. Unconstrained exploitation of natural resources
5. Natural gas production environmental hazards
6. Hazardous locations for nuclear power plants
7. Environmental pollution
8. Environmental hazards of exotic species introduction
9. Destructive wildlife
10. Destruction of wilderness
11. Destruction of the countryside
12. Deforestation of mountainous regions
13. Loss of plant cover

1. Restoring wildlife habitats
2. Protecting biological niches
3. Preserving natural ecosystems
4. Destroying biological niches
5. Damaging ecosystems
6. Conserving wildlife habitat

1. Unnaturalness
2. Degradation
3. Damage
4. Destructiveness