Desmatosuchus was a crocodile relative that lived only during the triassic period. horsetails are plants that first appeared in the triassic period and still exist. which of these organisms would be more useful as an index fossil for the triassic period? why?

if you just answer this to get the points you're gonna be reported

Use this dichotomous key for insect identification to identify the insect shown. 1. a. insect has one pair of wings. order diptera b. insect has two pairs of wings. go to #2 2. a. front wings thicker in texture than hind wings go to #3. b. front and hind wings are same texture throughout. go to #4 3. a. front wings are short order dermaptera b. front wings cover entire abdomen order coleoptera 4. a. wings with scale on all parts of their area. order lepidoptera b. wings without scales go to #5. 5. a. hind wings smaller than front wings. order ephemeroptera b. front and hind wings nearly equal in size. order odonata the insect pictured is in the order diptera. ephemeroptera. coleoptera. odonata.

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Which of the following forest management practices is best for reestablishing areas of forest?