Information about climatic changes; changes in the environment; and saving the environment.
Asked in Environmental Issues, Oceans and Seas
What percentage of Earth's surface is covered by water?
According to some figures, the consensus is that 70.8% of the Earth's surface is covered by water; 29.2 % is covered by land. Other figures suggest the percentage of Earth's surface covered by water is 71.11%; the percentage covered by land is 28.89%. Only 3% of that water is fresh water, the rest is saltwater. The amount of Earth covered by water is exactly 71.13% 70.78% of the Earth is covered in water. Land covers 29.22 percent of the Earth's surface. This is about 57.5 million square miles (149 x 106 square kilometers). Water covers the other 70.78 percent of the Earth's surface. This is about 139.4 million square miles (361 x 106 square kilometers). It's just over 7/10 The answer is simple, water covers about 70% of the earth's surface, and has a volume of about 1.4 billion km3 Furthermore about 97% of earth's water is stored in the oceans. About 71 percent of the Earth's surface is water-covered, and the oceans hold about 96.5 percent of all Earth's water. But water also exists in the air as water vapor, in rivers and lakes, in icecaps and glaciers, in the ground as soil moisture and in aquifers, and even in you and your dog. Yes the water cover the earth 75vpercent.
Asked in Environmental Issues, School Subjects
What are Multiple choice questions on Environmental science?
1) What are the three R's? 2) What are three ways to help the environment? 3) What is Co2? 4) What is H2O? 5) What is O2? 6) What to trees produce? 7) What is another name for twister? 9) What % of earth is covered in water? 10) What % of earth is covered in land? 11) A green substance in leaves? 12) What is processing and reusing waste materials called? 13) What affect does global warming have? 14) What do you call the rain that contains chemical waste and causes of damage to plants and animals? a) Smog b) acid rain c) Monsoon rain d) Seasonal rain 15) What is the term used to describe a substance that can be broken down and be eaten up by microorganisms like bacteria? a) Compound b) Environment friendly c) Biodegradable d) Recycled 16) How many trees does it take to make a ton of paper? a) 9 b) 12 c) 17 b) 24 17) How much oil does it take to process one ton of wood into paper? a) 10 gallons b) 45 gallons c) 1.5 barrels d) 3.5 barrels 18) Which of the following cannot be recycled? A. Milk cartons B. Plastic water bottles C. Glass containers D. Paper bags E. None of the Above 19) If you recycle one ton of paper, how many trees can you save? A. One B. Nine C. Seventeen D. Thirty-five E. One Hundred 20) How many times can glass be recycled? A. No glass can't be recycled! B. Once C. Four times D. Twenty times E. Forever 21) The average aluminum can is made up of how much recycled aluminum? A. 10% B. 30% C. 50% D. 70% E. 100% 22) What ways can you help save our earth? A. Re-use your plastic bottles and bags B. Reduce the amount of waste you produce C. Plant a tree D. Recycle E. All of the Above! 23) Most of the trash your family throws away each day ends up getting....... a) Recycle b) Burned c) Landfill d) Eaten 24) Which items are recyclable? a) Plastic milk jugs b) Cereal boxes c) Aluminum soda cans d) All of the above 25) What is the environmentally friendly way to dispose of used tires? a) Send them to a landfill b) Recycle them into a playground matting c) Dump them in a ditch along the roadway d) Collect them and put them in a big pile 26) What is groundwater? a) Water that is spilled onto the ground b) Water beneath the ground surface c) The bottom part of a lake or river d) Rainwater that lands on the ground 27) What material do we throw away the most? a) Glass b) Paper c) Aluminum d) Plastic 28) How long does it take Styrofoam to break down in a landfill? a) 10 Years b) 50 Years c) 100 Years d) 500 Years 29) Used oil should be disposed of by….. a) Dumping it on your driveway b) Watering it down and spreading it as a fertilizer c) Collecting it in a sealed container and taking it to an oil changing business d) Keeping in the garage for 10 years before throwing it away in the trash
What is the greatest environmental problem today?
Global warming. Our weather is changed and this changes how we live and what we grow. The oceans are rising and coastal areas are flooding. The ice caps are melting and polar bears are drowning. The massive forest fires that now happen threatens cities, houses, and national parks. We are getting to a tipping point of no return if something is not done.
Asked in Mice and Rats, Environmental Issues
What is man's adaptation to environment?
Well, when humans change to make themselves comfortable in unpleasant conditions it is known as adptation or evolution. _____________________________________________ Evolution only occurs when the last species dies and a new one, with a more equipped body, takes over. I refer you, instead of mass spamming the edit box with information, to this very interesting article/essay on the biological adaptation with humans in reference to nutritional, physiological and psychological terms. http://onlinelibrary.wiley.com/doi/10.1111/j.1749-6632.1961.tb31093.x/pdf the geographical variability of some morphological, physiological and serological traits of man is discussed with respect to the question, how far this variability can be considered as the result of selective adaptation processes. Though there is already some evidence supporting such an assumption, much more detailed and exactly planned research is necessary to clear the indubitable relations between the distribution patterns of anthropological traits and the various environmental conditions of human biotops. Particularly much more work is required to understand the causative mechanisms on which these relations are based. Source :- http://toptenstuff.co.in/environmental-adaptation-of-man/
How do skyscrapers affect the environment?
They affect the environment lots of ways, for example, building a skyscraper where you can plant a tree can definently affect the environment or a controlled demolitions can cause debris and dust take away some fresh air. If we build up rather than out, thereby increasing the population density of an area, some of the effects are: (1) Land is available for use other than housing the people who live or work in the skyscraper and for businesses that are quartered there. (2) Some services, such as water supply, waste disposal, food delivery, retail goods, and repair services, are more efficiently provided. (3) Mass transit--if that goal is sought--is feasible, as it is not in rural, sparsely populated areas. (4) Health facilities and educational services can be more advanced, more varied, and more accessible than they are in rural areas.
Asked in Environmental Issues
What are the problems of rainwater harvesting?
If you own a water utility, you bring in less revenue if your customers begin catching and re-using rainwater. Dirt and leaves fall on your roof and this is washed into your pipes at the first rainfall. This can be fixed with a "first flush diverter" which catches the dirty water automatically. A float rises in a tube as the tube fill with dirty water. When the tube is full, clean water is automatically diverted into your tank.
Why not dispose of nuclear waste on the moon?
There are two major problems with this. The first takes the pragmatic view of this option and the other aesthetic. Even in 2010, a jump to the moon is nothing to trifle at. It still takes time, it still takes resources, and more importantly, it still costs money (and a lot of it). But that's not even taking into account the waste you would have to transport. Nuclear waste is going to be heavy, meaning you need a bigger rocket, more rocket fuel, and more money. For these reasons, disposing of nuclear waste on the moon would be astronomically expensive and completely impractical. Additionally, we have polluted the Earth quite effectively. Do you really want to extend that to the Moon? It may be a hunk of rock devoid of life, but it is currently devoid of pollution as well. I don't like the thought of polluting the Earth, much less the extension of pollution outside of Earth.
Asked in Animal Life, Environmental Issues
How does rubbish affect animals?
There are many ways in which rubbish can affect and be harmful to animals. They can get stuck or trapped in rubbish such as old fishing lines, plastic bags and fishing nets. Some eat the rubbish (like sea turtles eat plastic bags because they think it is jellyfish), and then eventually die as the rubbish blocks airways or gets into their stomach and then they are unable to process food. Old cans, and tins can rust and pollute the water, and make it harder to breathe (particularly if it is on a coral reef). There have been many rules and laws to try to stop the spreading of rubbish, but there are still many bits of rubbish that can hurt animals. Some of the main bits of rubbish would be fishing lines or nets.
Asked in Environmental Issues, Radioactive Waste
How do nuclear wastes affect the ecosystem?
Nuclear waste is not normally allowed to enter the ecosystem for many obvious reasons. The correct containment of high level waste is still debated because of this issue. The material will remain radioactive longer than any civilization has ever existed and the concern that the material remains safely away from the ecosystem is very real and hard to quantify. If high level waste does reach the ecosystem, the affect is overall very negative. Animals can become ill or die. Tumors and cancers can become an issue and reproduction problems for plant and animal life has been observed. Low level materials and regular waste from the site is very different. They have similar issues to regular day to day waste in terms of their environmental impact.
Why does animal extinction happen?
Asked in Environmental Issues, Ecosystems
How does weather effect an ecosystem?
What are the hazards involved in using biomass?
There are many difficulties that are to be faced while using biomass.I have collected them and are printing them here... -2ndGeneration biofuels:Cellulosicfeedstock (wood, crop residues and grasses, paper -from municipal waste) the technology is yet to reach acceptable levels of economic viability Direct combustion Pyrolysis(Destructive distillation) Anaerobic digestion Alcoholic fermentation Gasification Carbonization (Conversion into charcoal) Oil extraction and trans-esterification Difficulties Low concentration of biomass per unit area of land and water Scarcity of land for food drops and energy High moisture content that make transportation expensive and energy conversion inefficient Land degradation arising from charcoal harvesting Haphazard wood harvest causes severe environmental damage reduced supply of woodfuel Pertinent need to improve the efficiency of wood burning stoves to minimize the concentration of pollutants environmental concerns Assessment of health effects of emissions from wood stoves and biomass conversion technologies June 2008 Competition with other land uses such as food production Reduction of natural plant and animal species diversity due to monoculture -less stable ecosystem Invasiveness of certain plant species Deterioration of soil quality due to continuous use of pesticides and fertilisers Increase in the prices of food products Air pollution from the combustion of woodfuel(Low combustion efficiency and therefore high emissions of Carbon monoxide, particulate matter especially during the cold seasons (high concentration of wood stoves); Polycyclic Organic Matter (POM) emissions such as Benzo(a)pyrenewhich are known carcinogens are the most dangerous components CO emission from the equipment used for harvesting, chipping and transport equipment Use of wood instead of coal significantly reduces SO2emissions from coal fired plants Corrosive effect of sulphurousand sulphuricacid from the reaction of H2S with water. Air pollution: fugitive dust from raw material and product handling; organic vapoursfrom the distillation process; volatile organic compounds; odoursfrom fermentation tanks Safety: Explosiveness of the gas in confined environments (leaks) Odourfrom H2S in biogas Decentralisedethanol production may not be favourablefor monitoring environmental conditions and enforcement of environmental standards 16th June 2008 21 Impacts on water sources by the leaching of biomass storage pile Energy requirements, wastes from the distillation process and hazards associated with the use of toxic chemicals Damage of aquatic ecosystems arising from stillage(High biological and chemical oxygen demand) Reduction of feedlot pollution arising from run off from cattle feed lots (bacteria, suspended and dissolved solids, chemical and biological oxygen demand) especially for aquatic systems Waste disposal problems Effluent from biogas systems contains high concentrations of inorganic salts, H2S and NH3or even heavy metals. Elimination of drawbacks of animal manure (disposal problems) Removal of crop residues from land Increased erosion and flow of sediments into surface waters Decrease in productivity Increased flood potential I hope this information is handy.......
Is there such thing as a solar powered phone?
I have seen cell phone batteries with solar cells in them, but not in a while. So solar powered phones exist. There is also a pocket-sized product called Solio which opens up into a fan of solar panels and contains a backup battery and power charging cords for cellphones. You just have to remember to leave it in the sun while talking on the phone, since there probably isn't much sunlight in your pocket. (It also comes with a plug-in charging cord, but if you're on the grid, what's the point?)
Asked in Environmental Issues, Pollution, Air Pollution
What environmental problems do pigs cause?
pigs amongst many farmed animals give off methane gas in there feces (manure) and methane is extremely good at trapping heat,it lets heat in from the sun but does not let it out. the pigs manure contains toxic compounds that seep into the water table witch is then in our tap water. how ever the manure is a good fertilizer and is full of phosphates and minerals that are good for vegetation. If you have ever visited a pig sty or a pig farm and smelt that horrible odor well that is ammonia from feces and urine as well as hazardous viral and bacterial life forms all this seeps in to the ground into the water table and finds it way in to our drinking water sources. the C,F,C methane amongst one of them is all so highly flammable. cows are one of the worse polluters as they belch out enough methane in one day,just one cow,to fill 15x50 gallon oil drums per day so now imagine the whole worlds population doing that as well as pigs and other animals.
Asked in Environmental Issues
Are krill considered renewable or nonrenewable?
Whether krill is a renewable or nonrenewable source is a subject of some controversy. Krill harvesting is controversial because it (especially Euphasia superba from the waters of the Antarctic) is at the bottom of the food chain and the main diet of many species, including whales and penguins. The treaty organization that manages the Antarctic fisheries (Commission for the Conservation of Antarctic Marine Living Resources, or CCAMLR) sets "precautionary limits" on the amount of krill that can be caught in any time period, upon the advice of scientists from the organization's member nations. These "precautionary" limits are actually far below what the scientists estimate is a sustainable (renewable) catch, but they are playing it very safe since the resource is so important. Certain environmental groups want a complete ban on krill fishing, based on the idea that we really don't know enough about how the fishing will affect the supply, and because the krill population appears to be affected by global warming. However, the scientists of CCAMLR are adamant that the krill fishery is one of the best managed in the world. You can find many more details on this subject at wellwise.org.
Which are the most vulnerable homes during floods?
MOST VULNERABLE HOMES 1. Buildings, which are constructed with earth-based materials or using stone and brick in mud mortar are highly vulnerable to damage in heavy rains and/or floods. 2. The huts made from biomass materials like bamboo, leaves, thatch or light construction using metal sheets are easily destroyed in floods and washed away. 3. The occupation of areas within the flood plain of rivers has increased the vulnerability, especially in areas of high population concentration. Flood plains attract poor people because of inexpensive land values.
What are the positive effects of man on nature?
The positive impact of humans on the nature (i) Humans are responsible for the introduction of new species of plants from one part of the world to another; for example, rubber from the Amazon Basin of Brazil was brought to Malaysia, which is now the world's largest producer of rubber. (ii) By selective breeding, he has improved the yields of crops. (iii) By domesticating animals he has protected them from their predators. (iv) New breeds of cattle have been developed which give much higher yields. (v) He has made his life comfortable by using the natural resources.