Trees Make Oxygen, People Use Oxygen

Trees Make Oxygen, People Use Oxygen Trees alone can produce enough oxygen to support all human oxygen needs in North America. Trees are important and benefit the environment. A mature leafy tree produces as much oxygen in a season as 10 people inhale in a year. This quote was by an Arbor Day Foundation report.  For a number of reasons, including tree availability and other photosynthetic plants, human consumption of oxygen produced just by trees can vary dramatically. There is also some question as to how many mature leafy trees are in the United States, but a rough estimate using United States Forest Service (FIA) data would be around 1.5 billion that have reached maturity (assuming they are 20 years old or older). There are approximately three mature trees for every person in the United States... more than enough. Other Tree Oxygen Estimations Here are some other quotes from different sources which may be more or less conservative than  my report: A single mature tree can absorb carbon dioxide at a rate of 48 lbs./year and release enough oxygen back into the atmosphere to support 2 human beings. - ​ McAliney, Mike. Arguments for Land Conservation: Documentation and Information Sources for Land Resources Protection, Trust for Public Land, Sacramento, CA, December, 1993.On average, one tree produces nearly 260 pounds of oxygen each year. Two mature trees can provide enough oxygen for a family of four. - Canadas environmental agency, Environment Canada.Mean net annual oxygen production (after accounting for decomposition) per hectare of trees (100% tree canopy) offsets oxygen consumption of 19 people per year (eight people per acre of tree cover), but ranges from nine people per hectare of canopy cover (four people/ac cover) in Minneapolis, Minnesota, to 28 people/ha cover (12 people/ac cover) in Calgary, Alberta. - U.S. Forest Service and International Society of Arboriculture joint publication. Considerations Several of these sources suggest that it all depends on the tree species and their local populations. Other things that will increase oxygen availability to humans is a trees health and where you live when computing tree oxygen availability per person.

Trees Make Oxygen, People Use Oxygen

Trees Make Oxygen, People Use Oxygen Trees alone can produce enough oxygen to support all human oxygen needs in North America. Trees are important and benefit the environment. A mature leafy tree produces as much oxygen in a season as 10 people inhale in a year. This quote was by an Arbor Day Foundation report.  For a number of reasons, including tree availability and other photosynthetic plants, human consumption of oxygen produced just by trees can vary dramatically. There is also some question as to how many mature leafy trees are in the United States, but a rough estimate using United States Forest Service (FIA) data would be around 1.5 billion that have reached maturity (assuming they are 20 years old or older). There are approximately three mature trees for every person in the United States... more than enough. Other Tree Oxygen Estimations Here are some other quotes from different sources which may be more or less conservative than  my report: A single mature tree can absorb carbon dioxide at a rate of 48 lbs./year and release enough oxygen back into the atmosphere to support 2 human beings. - ​ McAliney, Mike. Arguments for Land Conservation: Documentation and Information Sources for Land Resources Protection, Trust for Public Land, Sacramento, CA, December, 1993.On average, one tree produces nearly 260 pounds of oxygen each year. Two mature trees can provide enough oxygen for a family of four. - Canadas environmental agency, Environment Canada.Mean net annual oxygen production (after accounting for decomposition) per hectare of trees (100% tree canopy) offsets oxygen consumption of 19 people per year (eight people per acre of tree cover), but ranges from nine people per hectare of canopy cover (four people/ac cover) in Minneapolis, Minnesota, to 28 people/ha cover (12 people/ac cover) in Calgary, Alberta. - U.S. Forest Service and International Society of Arboriculture joint publication. Considerations Several of these sources suggest that it all depends on the tree species and their local populations. Other things that will increase oxygen availability to humans is a trees health and where you live when computing tree oxygen availability per person.

Trees Make Oxygen, People Use Oxygen

Trees Make Oxygen, People Use Oxygen Trees alone can produce enough oxygen to support all human oxygen needs in North America. Trees are important and benefit the environment. A mature leafy tree produces as much oxygen in a season as 10 people inhale in a year. This quote was by an Arbor Day Foundation report.  For a number of reasons, including tree availability and other photosynthetic plants, human consumption of oxygen produced just by trees can vary dramatically. There is also some question as to how many mature leafy trees are in the United States, but a rough estimate using United States Forest Service (FIA) data would be around 1.5 billion that have reached maturity (assuming they are 20 years old or older). There are approximately three mature trees for every person in the United States... more than enough. Other Tree Oxygen Estimations Here are some other quotes from different sources which may be more or less conservative than  my report: A single mature tree can absorb carbon dioxide at a rate of 48 lbs./year and release enough oxygen back into the atmosphere to support 2 human beings. - ​ McAliney, Mike. Arguments for Land Conservation: Documentation and Information Sources for Land Resources Protection, Trust for Public Land, Sacramento, CA, December, 1993.On average, one tree produces nearly 260 pounds of oxygen each year. Two mature trees can provide enough oxygen for a family of four. - Canadas environmental agency, Environment Canada.Mean net annual oxygen production (after accounting for decomposition) per hectare of trees (100% tree canopy) offsets oxygen consumption of 19 people per year (eight people per acre of tree cover), but ranges from nine people per hectare of canopy cover (four people/ac cover) in Minneapolis, Minnesota, to 28 people/ha cover (12 people/ac cover) in Calgary, Alberta. - U.S. Forest Service and International Society of Arboriculture joint publication. Considerations Several of these sources suggest that it all depends on the tree species and their local populations. Other things that will increase oxygen availability to humans is a trees health and where you live when computing tree oxygen availability per person.

Why the modern world is bad for your brain by Daniel J Levitin Essay - 220

Why the modern world is bad for your brain by Daniel J Levitin - Essay Example Levitin draws on the research and works of several Neuroscientists and Psychologists to break the myths of multitasking and explain the physical and mental effects of the modern obsession and addiction to technology. I think the arguments advanced by Levitin sound convincing in view of my personal experience, news reports and similar findings from research around the globe. Levitin argues comprehensively against multitasking to shatter the ‘illusion’ surrounding multitasking and to point out the eventuating mental and physical losses to the multitaskers. One interesting observation made by Levitin is that the chronic tendency to multitask deludes people into believing that they are accomplishing a lot in a short time but in reality divides their attention between too many things to make them less efficient, more stressed and lose their cognitive abilities. Using research evidence, Levitin explains that switching between tasks stimulates the production of stress-related h ormones resulting in clouded thinking, anxiety, depleted concentration. The ultimate outcome is a temporary pleasure but permanent loss of efficiency and cognitive skills, according to Levitin. I find this argument compelling because of my urge to multitask. When I am doing a reading for an assignment, for example, simultaneously I check and respond to emails, instant messenger, answering my phone, and sometimes listening to my favorite music too. If I find myself at times at a student computer lab where I may not have access to my personal email or music, or not allowed to use mobile phone, I frequently get distracted by the thought that I am doing too little when there is a lot to do. As a result, I become anxious for no reason, as just the very thought of missing out on doing several things at once makes me feel stressed.  

Latest measle outbreak in florida Assignment Example | Topics and Well Written Essays - 250 words

Latest measle outbreak in florida - Assignment Example Approximately 93% of children in South Florida received measles vaccination when the disease was detected. Then vaccines are mostly administered to children from the age of 12 months to six years (CBS Miami, 2015). Some of the risk factors that contributed to the spread of measles include interaction with other travelers, as well as being in contact with them. Other ways in which the diseases was spread was through sneezing and coughing. When a person contracts measles, they tend to experience a running nose, sore throat, coughing, and moderate fever. The disease is mostly associated with failure to vaccinate children from the measles virus at a young age (CBS Miami, 2015). Currently, the health department in South Florida is working with the CDC, as well as other partners to identify cases of measles in the state. The state government of South Florida is urging all persons who suspect to have contracted the disease to report to the relevant authorities. In addition, South Florida and other states in the United States are conducting immunizations to prevent any cases of measles (CBS Miami,