There are a lot of reasons.
One is a big cloud (like one resulting from massive volcanic activity or the impact of a large asteroid) can block the Sun and plants would not survive, so then many herbivores die followed by most carnivores.
When an environment changes the organisms living in it may not have the time to evolve to adapt, and so they die.
A change in climate can lead to extinction because it can destroy organisms' habitats. For example, woolly mammoths had thick fur that was perfect for keeping themselves warm in the cold area. When global warming caused the climate to become warmer, their traits for cold weather were no longer helpful and eventually became extinct.
Climate change refers to long-term changes in temperature and weather patterns on Earth, primarily caused by human activities such as burning fossil fuels and deforestation. This leads to increased levels of greenhouse gases in the atmosphere, resulting in global warming and other environmental impacts.
We pollute which causes acidic rain, deforestation and poaching leads to endangered species and loss of habitats for many animals (deforestation causes the second one) and there are more but that's all I could think of.
Deforestation can contribute to climate change by reducing the number of trees that absorb carbon dioxide from the atmosphere. This leads to an increase in greenhouse gases, which trap heat in the atmosphere and contribute to global warming. Additionally, deforestation can disrupt local weather patterns and reduce biodiversity, further impacting the climate.
Deforestation contributes to climate change by releasing stored carbon dioxide into the atmosphere, reducing the Earth's ability to absorb greenhouse gases, and disrupting the water cycle. This leads to increased global temperatures, altered weather patterns, and loss of biodiversity.
Deforestation contributes to climate change by reducing the number of trees that can absorb carbon dioxide from the atmosphere. This leads to an increase in greenhouse gases, which trap heat in the atmosphere and contribute to global warming. Additionally, deforestation can disrupt local weather patterns and lead to changes in precipitation levels, further impacting the climate.
Hundreds of endanger species could be lost by 2025 due to habitat loss. As humans expand and change the landscape, it directly leads to the extinction of many species.
The single most important factor contributing to the modern-day extinction of hundreds of species is habitat destruction, primarily driven by human activities such as deforestation, urbanization, and agriculture. This loss of habitat not only reduces the living space available for species but also fragments ecosystems, making it difficult for species to find food, mates, and migrate. Additionally, habitat destruction often leads to a cascade of other threats, including pollution and climate change, further exacerbating the risk of extinction.
Some effect of deforestation are:local: locals move, flooded crops, habitats lost, extinction of species national: big companies are rich, habitats lost, extinction of species global: global warming/greenhouse effect, habitats lost, extinction of species
These are two different questions and need two different answers. Climate change could mean warmer temperatures, causing heat stress in the flora or fauna of the ecosytem. It could mean more prolonged droughts, so that some species can not longer survive in the environment. It could alternatively mean more frequent floods, causing destruction of specimens and destabilising the ecosystem. Greater storm activity associated with climate change can also have a deleterious effect on some species, destabilising the ecosystem. Climate change can even favour one species over another and, if they are competitors or prey, create an imbalance that leads to extinction. Introducing just one new usually has a lesser impact on an ecosystem, although any unforseen effect could result in localised disaster and widespread species extinction. Any loss of plant species could potentially lead to serious erosion and loss of topsoil and even, in the extreme, desertification.
Three processes that have affected the history of life on Earth include natural selection, mass extinction events, and evolutionary diversification. Natural selection drives the adaptation of species to their environment, mass extinction events change the course of evolution by wiping out many species at once, and evolutionary diversification leads to the emergence of new species over time.
extinct.
One of the negative impacts of deforestation is the destruction of habitats for various species. It also leads to climate change and the increase of greenhouse gases.
Direct competition in nature often leads to the survival of the fittest, where only the strongest individuals or species are able to thrive and reproduce. This competition can drive evolutionary adaptations that help organisms better compete for limited resources such as food, mates, or territory. Ultimately, it can lead to the extinction of less competitive species.
gradualism
Through mutations in DNA. If a mutation is beneficial and helps the organism survive it is passed on to the next generation which leads to the evolution of a species causing it to change.
Deforestation leads to loss of biodiversity, disruption of ecosystems, and contributes to climate change through the release of stored carbon in trees. It can also result in soil erosion, flooding, and loss of habitat for many species.
The extinction of various species leads to a less diverse ecosystem because it reduces the variety of interactions and relationships within the ecosystem. This can disrupt the balance of the ecosystem and lead to negative cascading effects on other species and the overall ecosystem functioning. Additionally, decreased biodiversity can make ecosystems more vulnerable to environmental changes and less resilient to disturbances.