- Fossils are not absolute timekeepers, because we have little idea of the rate of evolution; they are only relative timekeepers, which enable us to check off the period of deposition of one formation with that of another.
Best of all, you won't be paying for it, so why not just go ahead and check off all of the most adorable items?
Simply check off the type of living arrangement needed, type in Denver and choose Colorado from the drop down menu.
One procedure for diagnosing children aged 24 to 36 months asks parents to complete a standardized questionnaire in which they check off the vocabulary the child knows and write down examples of the child's two-word sentences.
He seems to be waiting for the inevitable while I try to check off my bucket list.