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Climate change is the result of greenhouse gas emissions, which are produced by human activity. Canada was the world's 7th largest greenhouse gas emitter in terms of GHG Inventory data, as of 2021. [5] In 2020, Canada emitted a total of 678 million tons of carbon dioxide equivalent (Mt CO 2 eq) into the atmosphere.
A 2019 review of scientific papers found the consensus on the cause of climate change to be at 100%, [6] and a 2021 study concluded that over 99% of scientific papers agree on the human cause of climate change. [7] The small percentage of papers that disagreed with the consensus often contained errors or could not be replicated.
Water pollution in Canada is caused by municipal sewage, urban runoff, industrial pollution and industrial waste, agricultural pollution, inadequate water infrastructure. This is a long-term threat in Canada due to "population growth, economic development, climate change, and scarce fresh water supplies in certain parts of the country."
Environmental issues in Canada include impacts of climate change, air and water pollution, mining, logging, and the degradation of natural habitats. As one of the world's significant emitters of greenhouse gasses, [1] Canada has the potential to make contributions to curbing climate change with its environmental policies and conservation efforts.
Effects of climate change on the water cycle. Extreme weather (heavy rains, droughts, heat waves) is one consequence of a changing water cycle due to global warming. These events will become more and more common as the Earth warms. [1]: Figure SPM.6. The effects of climate change on the water cycle are profound and have been described as an ...
Environment and Climate Change Canada is the federal department in charge of conserving and protecting Canada's water resources. The Water Act (2000), a federal legislation, "supports and promotes the conservation and management of water, including the wise allocation and use of water.". [6] The provinces are responsible for administering the ...
Scientists warn that if carbon dioxide and other greenhouse gas emissions continue to rise at their current rates, Earth’s temperatures could increase dramatically in future decades, leading to catastrophic and irreversible climate change. The 10 largest emitters produced about 26.4 gigatons of carbon dioxide in 2013.
The history of the scientific discovery of climate change began in the early 19th century when ice ages and other natural changes in paleoclimate were first suspected and the natural greenhouse effect was first identified. In the late 19th century, scientists first argued that human emissions of greenhouse gases could change Earth's energy ...