How are species that were once thought extinct being found again? (What tools and methods are being used)

Asap what occurs after cytokinesis is completed at the end of meiosis 1?

Which soil would most likely be found in the arctic? andisols gelisols histosols spodosols

Aragonite shells of clams, snails, or scleractinian corals may be preserved unaltered in cenozoic deposits, but they are generally dissolved or recrystallized in older deposits. true or false