Human Changes In The Carbon Cycle Over Time Flashcards
What percentage of fossil fuel energy increase occurred between 1971 and 2013?
150% increase.
What is especially significant about developing countries in relation to the carbon cycle?
They increase their emissions by double, or more.
How much carbon dioxide is added to the atmosphere from the deforestation of the Amazon?
15% of carbon dioxide released each year is released in the physical deforestation of Brazil into the atmosphere.
14% of carbon dioxide released each year is released in all the transportation that occurs involved with the deforestation of Brazil.
How much of global forests are cut down every year, and replaced with a new land use i.e. farming?
13 million hectares.
What percentage of the human population lives in cities?
54% currently, however it is predicted to be 70% by 2050.
How much energy do cities demand?
Cities consume 80% of worldwide energy products, and account for equal share of global greenhouse gas emissions.
What increase in carbon dioxide emissions will developing countries cause?
89% increase.
How much has carbon dioxide emissions grown as a result of agriculture?
These emissions have doubled in the past 50 years, and are set to increase by another 30% by 2050.
How much have outputs from livestock and crops grown in the last 10 years?
They have grown from 4.7 billion tonnes to over 50 billion tonnes of output.
In April 2011, how much methane (a greenhouse gas) was released from livestock?
39% was released.
Which continents emit the most greenhouse gases as a result of agriculture?
Asia, at 44% followed by the Americas at 25%.
How much greenhouse gas emissions are from agriculture?
1/3 of all greenhouse gas emissions.
