You and your friend are outside on a hot summer day. You hear the icecream truck in the distance and you decide you will race to see who gets there faster. You both start running at top speed. A few
seconds later, you arrive at the truck and you're both sweating and panting hard. Your friend collapses
on the ground exclaiming “My heart is racing!" Develop an explanation for why your body is
responding in this way to maintain homeostasis. Make sure your answer includes lung function and
heart function to explain what controls the concentration of solutes in your body.

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.