Although the planets in our solar system have unique features, they also have similarities. which of the following characteristics is most similar among the planets in our solar system?
a) mass
b) shape of orbit
c) number of satellites
d) chemical composition

they are non-matter

explanation:

they are non-matter. basically, any type of energy or any abstract concept is an example of something that does not matter. other examples include dreams, magnetism, radio, and hate

firearm identification is the process of analyzing the bullets and cartridge cases left at a crime scene to determine if they came from a particular firearm. marks on the bullets and cartridges may be common to every firearm of that type. these are called class characteristics.