Which of the following types of data would be required in order to consider the hypothesis that acid precipitation caused the loss of the salamander?
Select all that apply.
A. Data demonstrating that the salamander is no longer present
B. Data demonstrating that the stream has become less acidic than it was
previously
C. Data demonstrating that the stream has become more acidic
D. Data demonstrating that the course of the stream has shifted

Look at the picture below . what does this picture represent ?

What best describes the structure of the declaration of independence?

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.