A fossil that has unusual features is found in many areas on Earth. It represents a brief period of geologic time, but occurs in small numbers. Would this make a good index
fossil? EXPLAIN

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system

How are proteins and nucleic acids related? they both provide energy. they both carry genetic information. the structure of proteins is determined by nucleic acids. the subunits of nucleic acids are also the subunits of proteins.