Match each cell type with its corresponding description: Neutrophils

When water freezes, it . contracts expands

What enzyme is most important for dna replication and why?

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.