What is the evidence that human activity is causing increased atmospheric co2 levels?

Burning fossil fuels, releasing chemicals into the atmosphere, reducing the amount of forest cover, and the rapid expansion of farming, development, and industrial activities are releasing carbon dioxide into the atmosphere and changing the balance of the climate system.

What is the number 1 contributor to global warming?

Indeed, carbon dioxide, a byproduct of fossil fuel combustion, is the principal greenhouse gas contributing to global warming. However, other greenhouse gases including methane, nitrous oxide, and a number of industrial-process gases also are important contributors to climate change.

What is the evidence that human activity is causing increased atmospheric CO2 levels quizlet?

What is the evidence that human activity is causing increased atmospheric CO2 levels? The isotopic composition of atmospheric CO2 can be measured and shows that CO2 being added to the air now comes from combustion of fossil fuels.

What are thought to be the impacts of increasing CO2 in the atmosphere?

It absorbs less heat per molecule than the greenhouse gases methane or nitrous oxide, but it’s more abundant, and it stays in the atmosphere much longer. Increases in atmospheric carbon dioxide are responsible for about two-thirds of the total energy imbalance that is causing Earth’s temperature to rise.

What causes CO2 emissions?

There are both natural and human sources of carbon dioxide emissions. Natural sources include decomposition, ocean release and respiration. Human sources come from activities like cement production, deforestation as well as the burning of fossil fuels like coal, oil and natural gas.

What can Antarctic ice core samples tell us about atmospheric CO2 levels Select all that apply?

What can Antarctic ice core samples tell us about atmospheric CO2 levels? CO2 ice core data confirms CO2 measurements taken directly from the atmosphere. Ice cores can help scientists estimate atmospheric CO2 levels from centuries ago.

Which would result in the greatest reduction of the human ecological footprint?

Which would result in the greatest reduction of the human ecological footprint? United States population reduces their ecological footprint by 15\%.