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

Which list shows the levels of organization of an organism in hierarchical order from left to right, from the smallest to the most complex?

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? a) male gametophyteb) female gametophytec) male sporophyted) female sporophyte

Mr. olajuwan was in a horrific snowmobile accident. afterwards he had trouble walking and he had a loss of balance. which of the 4 major brain region was probably demaged