When performing scientific investigations, scientists often use different approaches. For example, one scientist might add an extra step to his or her investigation that another scientist's investigation does not need. In other cases, certain steps might be repeated or arranged in a different order. Even with all the different ways scientists can approach a problem, there are some basic steps that usually occur in the same order. For a single scientific investigation, which of the following shows steps in the most appropriate order? hypothesis gather experimental data draw conclusions question → → →

The theories on the expansion of galaxies maybe re-examined to strengthen science should not be tested to strengthen science will weaken scientific knowledge if they change will become laws if they don't change

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.

Match the description of each organism to the appropriate category