aquatic: An adjective that refers to water. behavior: The way something (often a person or other organism) conducts itself or acts towards others. chemical: A substance formed from two or more atoms that unite (bond) in a fixed proportion and structure. For example, water is a chemical made when two hydrogen atoms bond to one oxygen atom. Its chemical formula is H2O. Chemical also can be an adjective to describe properties of materials that are the result of various reactions between different compounds. crustaceans: Hard-shelled water-dwelling animals including lobsters, crabs and shrimp. CT scan: (Also known as a CAT scan). The term is short for computerized axial tomography. It is a special type of X-ray scanning technology that produces cross-sectional views of the inside of a bone or body. A computer can then digitally assemble the images from these slices to create a 3-dimensional reconstruction of internal features. debris: Scattered fragments, typically of trash or of something that has been destroyed. Space debris, for instance, includes the wreckage of defunct satellites and spacecraft. digest: (noun: …