At one time, it was believed that thewas in the center of our Solar System. The and orbited around the . This theory was known at thetheory. The theory stated that the Solar System was centered. It was many years later that another theory was developed and it stated that the was in the center of our Solar System. The and the orbited around the . This theory stated that our Solar system is centered.

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.