It also means that you have been that friend's number one best friend out of all of their friends as well, for two months. Red heart: After the yellow heart comes to the red heart â your BFF â if you remain each other's number one best friends for a period of two weeks.
Carbon dioxide is actually a very important greenhouse gas, and an important part of the process that makes Earth so pleasant to live on. The amount being generated, however, started to outstrip the Earth's abilities to handle it in the 20th century.nd CO2 is a greenhouse gas as is oxygen, water vapor and nitrogen. CO2 along with the other trap heat between the earths crust and the atmosphere, not letting it escape. This in turn raises the temperature of the earth.
A molecule of the compound carbon dioxide contains one atom of the element carbon and two atoms of the element oxygen. Each oxygen atom shares a double bond with the carbon atom. Carbon is the sixth element in the periodic table and occurs in pure form as coal and diamonds.Oxygen, element eight, is a gas that makes up about 21 percent of the atmosphere. Living things take in oxygen and release carbon dioxide. The oxygen helps turn food into energy, creating carbon dioxide as a byproduct.arbon is the sixth element in the periodic table and occurs in pure form as coal and diamonds. Oxygen, element eight, is a gas that makes up about 21 percent of the atmosphere. Living things take in oxygen and release carbon dioxide.