Choose the term that best completes the sentence.

A way of grouping organisms based on the characteristics they share is .

The science of naming and classifying organisms is called .

A two-word system for naming organisms in which the first part is the genus and the second part is the species is known as .

a corroding iron, if that's one of your choices

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.

its b it was a compound