The earth was covered with extensive polar and mountainous sheets of ice. So much water was taken up with ice that the global sea level dropped almost 140 meters. This time in earth’s history would be considered a glacial period. Oceanic circulation, solar energy fluctuations, continental positions and earth 's orbital cycle caused these conditions. Glacial global temperature changes between the ice ages and interglacial periods were due to the concentration of greenhouse gases.
The glaciers cover about 10 percent of the Earth it forms in the Canada, Greenland, and Antarctica (United States). There are giant ice sheets that cover most of the continent and the depth of the ice sheets range in different thickness ranging from hundreds of feet to thousands of feet. The glaciers have made an enormous impact on the Rocky Mountains by digging through the ground, depositing the sediment that it has picked up, and creating lakes. http://www.encyclopedia.com/topic/Rocky_Mountains.aspx Glacier erosion When glaciers scrapes across the ground moving dirt and creating deep valleys, it is a process called glacier erosion. It is believed that the glacial erosion has caused the Rocky Mountains to increase its height.
As shown in Document E, in less than 20 years, the length of ragweed pollen season has become on average 13.79 days longer, across the spread of central North America. Increasingly more people are becoming affected by these pollen seasons and all the consequences of climate change. Document F addresses all these concerns the doctors across the nation are finding to occur in patterns more frequently in the most recent years. As stated in F, “For instance, climate change is leading to longer pollen seasons, higher levels of pollen production, and more allergenic plant products- increasing symptoms among the many people that suffer from asthma, hay fever, and allergies.” The first frost of the year is being pushed back, allowing for allergenic plants to continue to thrive. Also, the heat is causing much more, untamable wildfires to occur, which sends thousands of people with respiratory-related illnesses to the hospital every year, such as those who suffer from bronchitis, asthma, and chronic lung disease.
Effects such as these can have unpredictable effects on the environment. The effect of reduced forest size has already had a measurable impact on the composition of our atmosphere in the relatively short amount of time we have been cutting them down(6). Ironically however it is the conversion of forest land to urban and agriculture use that has a more permanent and detrimental impact. Logging and urbanization lead to forest succession. Forest succession happens when there are changes to an environment that causes the composition of plant and animal species to change.
2. Water pollution can many times make water undrinkable, such as places with muddy water, lead water, or even radioactive water. V. Global warming is an event happening in every place in the world. In simplest terms, global warming is the warming of the Earth due to patterns in Earth’s climate, and also due to the release of greenhouse gases humans produce. Global warming plays a large part in the cause of drought.
This change occurs mainly in climate’s patterns that include temperature, precipitation, wind and humidity. We are experiencing a wide-range of impacts because Earth is warming up; this is an effect caused by the increase in the amount of atmospheric gasses, mainly carbon dioxide and other greenhouse gases. (Department of ecology, n.d.) Climate change has impacted most ecosystems in negative ways. For example, ice in the North Pole has been reduced by 12 percent per decade for the last 40 years, causing the death of many animals native to the areas and endangering many species that may soon face extinction. The Great Barrier Reef
The water scarcity of China, which is triggered lots of reasons, such as natural damage, inordinate emission of human industry or other reasons, which negatively influence the water pollution, also, with the climate change, the glacier is melting dramatically, warm temperature and precipitation change natural pattern and increase the desertification(News from the earth institute). China becomes drier every year, and there are varied of products related to agriculture. Two water scarcity issues of China are that uneven distribution of the water recourse and the water pollution. China’s south to north water diversion project have caused lots of positive effects in the uneven distribution of water. As China’s population and economy have improved totally, so a plan for water is essential for China development.
The consequences Global warming has led to that the sea level rise is accelerating, the number of large wildfires is growing, dangerous heat waves are becoming more common, extreme storm events are increasing in many areas and more severe droughts are occurring in others. It also causes many seasonal changes like longer winters and shorter summers. Animals and plants The increase in greenhouse gases is changing the climate faster than some living things may be able to adapt. Many species of animals and plants have already disappeared because of climate change. Global warming is causing a shift in the timing of natural events in the lives of animals.
There have been many concerns on reproduction and climate change in relation to animals and plants. How will they react ecologically and genetically to a changing climate? There are many documented cases now of disturbed seasonal patterns because of climate change in plants, insects, amphibians and birds (Parmesan 2007) and a mismatch between the seasonal peak in births and the peak of foraging conditions has been seen in a number of animals. One of these animals is yellow-bellied marmots of the Rocky Mountains. They are emerging 38 days earlier from hibernation than they did 28 years ago but now when they emerge the snow is far too deep for them to forage for herbs successfully (Inouye et al.
For awhile, global warming has become more recent and changing the planet and the animals behaviors. So far, “Rapid climate change is already causing problems for living creatures all over the world. One problem is that weather changes are resulting in mismatches between two species that have traditionally depended on one another,” (Nakaya). Furthermore, climate change is causing more problems, that the animals are not doing their regular jobs that they are supposed to do. In addition, animals are acting unusual by coming out of hibernation to early, polar bears are thinner and less healthy, different species are moving north to get more cooler air, and some species are breeding days before they should.
Global warming exists, and it is not only affecting the environment. Many, many animals are going endangered and even extinct because of human caused climate changing. One of those notable examples is the polar bears, which only have a population of 20,000-25,000. The reason polar bears are going extinct is because warmer temperatures in the north is causing the ice caps to melt more, and in the summer, polar bears use the ice caps to travel to get food after hibernating. But if the ice caps melt too much and break away, then polar bears
When the glacier stops its advance these objects have been moved hundreds of miles over thousands of years. All of the grinding of giant rocks now leaves sand clay and gravel. This debris is deposited in what today looks like giant mounds of sand in comparison to the mighty size of a glacier. These mounds are moraines and they are what is left when a glacier melts. They have
Ice cores also have to do with climate change when ice cores fluctuate the temperature rises leaving the mammoths in terrible conditions. So we are always weary if another ice age occurs. I think that another ice age will probably occur in a couple of centuries since the climate seems quite
Most of the mammoths used to leave in cold environment and they became extinct about 12,000 years ago. The mammoths became extinct because of Climate Change, Human Hunting and Hyper Disease. Over the years global temperature has been increasing democratically, therefore climate change is one of the causes of mammoth’s extinction. Mammoths are large woolly animals that lived in cold climate. According to the Illinois state museum the temperature of the earth
“Science will tell you that temperatures are increasing, the sea level is rising and the soil is melting”. Any science expert will tell you that there are already more than 25 million environmental refugees, “people who are moving away from drying wells and failed crops”. “One-sixth of the world’s population gets its water from melting snow and ice, and scientists predict that such sources will not be there in the years to