What is the scientific word for old?

What are reactants in science? When was speed discovered? What characterisics could be used to classify animals into different groups? What are some examples of episodic plot? What College did Alfred Wegener graduate from? What encompasses the processes by which your sense organs receive information from the environment? How many independent variables can be tested in a standard scientific experiment? What is the definition of machanical energy? On an atomic level what is the difference between banging metal against metal and melting-welding two pieces of metal together? If you check your credit report will it decrease your score? IS FASTING REQUIRED FOR A BASIC METABOLIC TEST? How did arthur kornberg's research impact science today? What are metals weakness? If you posed a hypothetical answer to a research question but then had a hard time finding data that supported your hypothesis what should you do? Give an example of a sentence using the word explain? Why is ethics considered a practical science? What is the heating process called? What do particles in solid and gas iodine look like? How many kg is 90 pounds? What does glog mean?