The pressure of a certain amount of gas is directly proportional to the temperature (measured on the Kelvin scale) and inversely
proportional to the volume. A sample of gas at a pressure of 1 atmosphere occupies a volume of 1 cubic meter at a temperature of 249 Kelvin. When heated, the gas expands to twice its volume, but the pressure remains constant. To what temperature is it heated?
They all wear their skeletons on the outside! This is called an exoskeleton and all creatures that have their structure on the outside are included in the phylum of Arthropods.
