When habitat becomes a major factor in the extinction of a species:
1. Genetic diversity is not achieved: If a species lacks genetic diversity within its population, it becomes more vulnerable to diseases, environmental changes, and other threats that can lead to extinction. Limited genetic variation can hinder the species' ability to adapt to new conditions.
2. Competitive species are introduced: Introducing new species that compete for resources can put pressure on the existing species in the habitat, leading to a decline in population and eventually extinction. Increased competition for food, space, or other resources can disrupt the ecosystem balance.
3. Changes in behavior start to develop: Environmental changes in the habitat can alter the behavior of species, affecting their ability to survive and reproduce. If these changes lead to maladaptive behaviors or disrupt important aspects of the species' life cycle, it can contribute to their extinction.
4. Smaller populations fail to breed: When populations of a species become small due to various factors like habitat loss or fragmentation, pollution, or hunting, they may struggle to find suitable mates for breeding. Inbreeding depression, where closely related individuals mate, can lead to reduced genetic fitness and reproductive success, increasing the risk of extinction.
In summary, habitat can play a crucial role in the extinction of a species when genetic diversity is lacking, competitive species are introduced, behavioral changes occur, and smaller populations face challenges in breeding. These factors highlight the delicate balance within ecosystems and the importance of preserving habitats for the survival of species.
