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www.mnn.com/.../stories/co2-101-why-is-carbon-dioxide-bad

We hear a lot about carbon dioxide when we talk about climate change, but sometimes it's important to go back and examine why too much CO2 in the atmosphere is a bad thing. CO2 — a naturally ...

www.thoughtco.com/carbon-dioxide-poisonous-607545

While carbon dioxide is a gas in the lungs, it exists in other forms in the blood. The enzyme carbonic anhydrase converts about 70% to 80% of carbon dioxide into bicarbonate ions, HCO 3-. Between 5% and 10% of carbon dioxide is a dissolved gas in plasma. Another 5% to 10% is bound to hemoglobin as carbamino compounds in red blood cells.

sciencing.com/co2-bad-planet-4876.html

Too much carbon dioxide in the atmosphere is not good for the planet or other living creatures. While CO2 is a natural result of life, and a vital part of the growth cycle of plants, too much of it in the atmospheric bubble that surrounds the Earth traps the heat from the sun, raising temperatures on Earth.

www.preservearticles.com/.../harmful-effects-of-carbon-dioxide.html

Carbon dioxide is not normally considered a pollutant because it is a normal constituent of air. However, excess of carbon dioxide is considered a [pollutant because it leads to adverse effects on the environment. The higher concentration of carbon dioxide in the atmosphere is likely to increase the temperature of the atmosphere.

www.quora.com/Why-is-carbon-dioxide-bad

The major reason behind it was the excessive amount of carbon dioxide as the product of any antropogenic activities -whether in industrial, land-use change, transportation and other sectors. Because compare to any other type of gases, human activities produce more carbon dioxide.

www.co2meter.com/blogs/news/4418142-dangers-of-co2-what...

Carbon dioxide is a natural gas found in our atmosphere. By volume, dry air contains approximately 78% nitrogen, 21% oxygen, 1% argon, but only 0.04% carbon dioxide and small amounts of other gases.. At 0.04% CO2 (400 parts per million) under normal conditions, you'll never have to worry about CO2.

www.answers.com/Q/How_is_carbon_dioxide_harmful_to_the...

Carbon dioxide is not normally harmful to plants, as it is the gas that they breath. However, excessive amounts, such as the possibilities that the greenhouse affect might cause, can greatly ...

www.livestrong.com/article/218049-the-effects-of-too-much...

Carbon dioxide is known as an asphyxiant, which is a substance that bonds with your blood in place of oxygen. The website eMedMag.com notes that while most simple asphyxiants do not have any inherent toxicity of their own, cases of CO2 poisoning have been linked to central nervous system damage and permanent deterioration of respiratory functions.

www.epa.gov/ghgemissions/overview-greenhouse-gases

Carbon dioxide (CO 2) is the primary greenhouse gas emitted through human activities.In 2017, CO 2 accounted for about 81.6 percent of all U.S. greenhouse gas emissions from human activities. Carbon dioxide is naturally present in the atmosphere as part of the Earth's carbon cycle (the natural circulation of carbon among the atmosphere, oceans, soil, plants, and animals).

climatekids.nasa.gov/carbon

What is the big deal with carbon? Why are they called fossil fuels? They're called fossil fuels because the fuel in your gas tank comes from the chemical remains of prehistoric plants and animals!. All living things on Earth contain carbon. Even you contain carbon.