What is the definition of all existing things?

How long is 2.79 km? Is a scorpion autotrophic? When living things grow do they need energy to power the process? What are the advantages and disadvantages of obtaining electricity from cells and batteries? What happens during asexual reproduction? How many pounds in 400g? How bright is lava? How cant you tell isotopes of the same element apart? What is the time required for the earth to rotate once on its axis called? What is the velocity of light per second? What ocean contains 46 of the earths water? What does Groups of cells with a similar function that works together mean? What does Mendel Mean by the statistical relations of different forms? How much zirconium copper alloy cost per kilo? Does the model of decay accurately represent the decay of a radioactive subsatnce? What is the color of sodium flame through cobalt glass? How long did vesuvius erupt ad79? What are the uses of combination reaction? In homelands the temperatures are very high but they are much lower at nights? Crushed soda can physical or chemical change?