Anadromous salmonids, which travel between freshwater and saltwater, is an example of how habitat loss can change evolutionary patterns. Dams constructed for hydroelectric power generation are blocking the access for these fishes, but culverts and river engineering have also reduced the amount of habitat that anadromous fishes can use (Furniss et al. 1991; NRC 1996). These results suggest that loss of habitat will alter evolutionary patterns in salmonid populations. Lastly, global warming results from human activities that cause an increase in the amount of greenhouse gases in the atmosphere, which confines the atmosphere's functional capacities, including regulating temperature and weather patterns. polar bears are supremely adapted to live,
Sockeye salmon victual insects when they are younger, but when they get older they victual other fish and organisms in their environment (Groot and Margolis, 1991; Olson et al., 1998; Quinn and Kinnison,
Global warming is caused by several things. One of these is the release of carbon dioxide into the greenhouse gases in the atmosphere by using energy generated from burning fossil fuels.
Global warming is a phenomenon whereby the earth's average temperature increases. Global warming has a devastating effect on the Earth's climate. Scientists are still studying global warming effects, and have not reached a consensus about what will happen in the future. The melting of the polar ice caps and global warming are getting more and more attention lately. If melting glaciers caused by global warming, or it is a natural process - at this moment opinion of scientists and experts is diverge. There are many causes of the melting of the polar ice caps and global warming, some of which are natural. However, the activities of man are responsible for much of the rapid change that
The first definable cause of global warming is because human activities. In the past few decades the population of the world has increased rapidly. This has certainly triggered to increase pollution and ultimately effecting in the rise of earth's temperature. The major contributors of the climate change
Global warming is an important issue in the world today and concerning its future. There are many factors that affect global warming and its levels. Though some of these causes of global warming are due to natural events, many are the result of human structures and activities. Global warming is mostly due to the emission of greenhouse gases and can have very negative consequences on the environment and society (“Global Warming”).
There is a large amount research demonstrating the impact of global warming on our planet. As the overall temperature of the Earth increases, ice and snow masses are melting. As more ice and snow is lost, the ocean’s sea levels are rising. Additionally with less ice and snow, less sun light is reflected into space and instead it is absorbed by the planet. The continual absorption of the heat in sunlight gradually warms the planet along with other factors. Therefore, the loss of ice caps, glaciers, and snow is furthering the increase in the temperature of the planet.
Climate change is caused by the interaction of humans on the environment. Atmospheric concentrations of carbon dioxide — the main heat-trapping greenhouse gas produced by human activities. Carbon dioxide is a “greenhouse gas” (GHG) that traps heat in the atmosphere, warming Earth's surface. It is generated by natural sources such as wildfires and volcanic eruptions, and by human activities — primarily burning fossil fuels such as coal, oil and natural gas (Weeks 523). “We cause global warming by increasing the greenhouse effect, and our greenhouse gas emissions just keep accelerating,”
Researches reveal that natural events as well as human related activities contribute to changes in average global temperatures. AtKisson affirms that global warming is basically a result of increased emission of greenhouse gases into the atmosphere. This atmospheric carbon dioxide (co2) comes from anthropogenic (caused by humans) sources. The concentration of greenhouse gas carbon dioxide, nitrous gases, and methane in the atmosphere has increased evidently due to human activities since 1800. NASA’s article adds:
Global warming has a lot of causes and effects throughout the globe, including: icecaps melting, deforestation, carbon emissions, factory smoke, forest fires, coral reefs dying, and extreme weather catastrophes. All of these causes and effects listed can be prevented if only the population of people who do not believe it is real would start caring about the environment and what we release into the atmosphere.
Global warming is concerned with an average increase in the temperature of the atmosphere and the increase in the Earth 's surface temperature primarily due to the emission of greenhouse gases from the burning of fossil fuels. As for the processes of global warming, they can occur from a variety of causes. The causes include the things that are concerned with natural and human factors.
Heat trapped in the planet’s surface in turns raises up the sea levels because of these green house gasses that human activity or say primarily energy production produces. It causes one major issues that Earth’s inhabitants’ face, the melting of the polar ice caps. The polar bears are mainly affected by this dilemma, they lose ice sheets in where they live, hunt, and raise their cubs. Sheets of ice get weaker and weaker leaving no platform for these poor creatures to stand in causing them to drown to death. With the shrinking area of these ice caps, the chances of the polar bears striving and reproducing are getting slimmer and slimmer due to increasing ecological imbalance and damage from the results of producing energy.
Global warming is caused by different factors, which are either natural or anthropogenic/human. Scientists have for long engaged in research on causes of global warming other than the natural factors. This has led to identification of many human related factors towards global warming. Greenhouse gases have been the major factors towards global warming. Both natural and human
The main cause for global warming is the rapid increase of carbon dioxide and other greenhouse gases in our atmosphere. The effect of this increase in greenhouse gasses has caused a slow but noticeable increase in the average temperature of the earth. Another name for this phenomenon is the greenhouse effect because it functions similarly to a green house. The
Global warming is an expansion in earth 's temperature because of greenhouse gas emissions, fossil fuels, deforestations, modern and farming procedures brought about by the human, natural and different gas emissions. The climate is characterized as the examination of assembled climate information for long-term designs. The release of methane gas and carbon dioxide are the two fundamental drivers of environmental change. Environmental change happens in our world 's climate because of the aggregation of dangerous greenhouse gasses. Global warming has gotten to be the risk to everybody and everything on this planet.
Global Warming is the result of the increasing in overall temperature of the earth’s atmosphere that is generally attributed to the Greenhouse Effect. The Greenhouse Effect is caused by the increase of the levels of carbon dioxide, chlorofluorocarbons and other pollutants (Wollersheim) in the earth’s atmosphere. Global Warming is a fact, not fiction but some people still think is it not affecting our earth’s planet. The fact is if we don’t take care of the problem now life on earth will not exist. This is an important topic that needs to be addressed before there is nothing left for the human race which includes animals and plants or any living things that live on this planet. This is no joke, but in this society, people think nothing is going to happen to our planet, I agree it probably will not in my lifetime but what happens in 100,200 years. Look at what scientist have discovered over the past decades with the globe is heating up on land and the oceans. Scientist have been studying this since the 1880s, (Pappas) we need to be educated on how to save our planet. Most scientists agrees that the main cause is human expansion of the greenhouse effect. There are facts the glaciers are melting, the sea is warming and causing the levels of the water to rise which is causing all wildlife to scramble to find a safe place to go. Take the polar bears, with all the glaciers melting they are dying out because of the perennial ice is melting. All of this