Carbon dioxide (chemical formula CO2) is a colorless and odorless gas that is vital to life on Earth. This naturally occurring chemical compound is made up of a carbon atom contently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent (400 ppm) by volume.Natural sources include volcanoes, hot springs and geysers, and it is freed from carbonate rocks by dissolution in water and acids. Because carbon dioxide is soluble in water, it occurs naturally in groundwater, rivers and lakes, in ice caps and glaciers and also in seawater. It is present in deposits of petroleum and natural gas.
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Sexual reproduction is mating between two organism usually female and Male to produce offspring. It’s different from asexual reproduction when you one need one organism to produce an offspring. Offspring born from sexual reproduction have unique traits that come from both parents meanwhile offspring born from asexual reproduction is another copy of the parent so they would have the same traits as the parent.
<span>Hospitals are required to screen all newborn babies for PKU! </span>
Because this tells us that we were not alone and that we may not be alone.