Which best explains how muscle cells and skin cells are adapted for our environment? question 2 options: 1 muscle cells have more mitochondria than skin cells because the human body is made up of more muscle than skin. 2 muscle cells need more mitochondria than skin cells because skin cells require a cell wall. 3 skin cells need more energy, so they have less mitochondria than muscle cells. 4 muscle cells need more energy, so they have more mitochondria than skin cells.

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.