Which of the following is true?
A: the main factors determining biome conditions are wind and soil type
B: a niche is the role an organism has in an ecosystem
C: the number of organisms in an abiotic factor
D: biomes generally follow man made boundaries, like country borders.

Is it considered muscle s ennervation if sympathetic fibers innervate the vessels within the muscle?

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.

Witch theory suggests all living things are made up of cell or cells