We hear a lot of talk about climate change and the devastating effects carbon pollution is having on the planet. From devastating storms to food insecurity caused by altered weather patterns, there's no questioning that carbon pollution is leaving its toll on the planet. It can be difficult, however, to figure out what you can do to help. Melting icebergs and massive tornados are forces much larger than one individual. That said, there are various actions you can take every day that will help keep the planet healthy for generations to come.
How Do Scientists Determine the Age of Dinosaur Bones?
How Do Scientists Determine the Age of Dinosaur Bones? | HowStuffWorks
Radiometric dating , radioactive dating or radioisotope dating is a technique which is used to date materials such as rocks or carbon , in which trace radioactive impurities were selectively incorporated when they were formed. The method compares the abundance of a naturally occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay. Together with stratigraphic principles , radiometric dating methods are used in geochronology to establish the geologic time scale. By allowing the establishment of geological timescales, it provides a significant source of information about the ages of fossils and the deduced rates of evolutionary change. Radiometric dating is also used to date archaeological materials, including ancient artifacts. Different methods of radiometric dating vary in the timescale over which they are accurate and the materials to which they can be applied. All ordinary matter is made up of combinations of chemical elements , each with its own atomic number , indicating the number of protons in the atomic nucleus.
Archaeologists use the exponential, radioactive decay of carbon 14 to estimate the death dates of organic material. The stable form of carbon is carbon 12 and the radioactive isotope carbon 14 decays over time into nitrogen 14 and other particles. Carbon is naturally in all living organisms and is replenished in the tissues by eating other organisms or by breathing air that contains carbon. At any particular time all living organisms have approximately the same ratio of carbon 12 to carbon 14 in their tissues. When an organism dies it ceases to replenish carbon in its tissues and the decay of carbon 14 to nitrogen 14 changes the ratio of carbon 12 to carbon
Amino acids are organic compounds that contain amino —NH 2 and carboxyl —COOH functional groups , along with a side chain R group specific to each amino acid. About naturally occurring amino acids are known as of though only 20 appear in the genetic code and can be classified in many ways. In the form of proteins , amino acid residues form the second-largest component water is the largest of human muscles and other tissues. In biochemistry , amino acids which have the amine group attached to the alpha- carbon atom next to the carboxyl group have particular importance. They include the 22 proteinogenic "protein-building" amino acids,    which combine into peptide chains "polypeptides" to form the building blocks of a vast array of proteins.