Which of the following is not an example of the use of a pheromone?
a.
wolves mark their territories by urinating at the boundaries.
b.
hyenas give off an odor that keeps different clans of hyenas apart.
c.
poisonous snakes wind around each other and butt heads.
d.
skunks release a rotten odor when they are threatened.

What is the most appropriate method of gaining weight (muscle mass)

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.

Which is one example of a phenotypic change that is not genetic