Create a small dichotomous key that names the following creatures.

1. Teeth visible go to 2
Teeth not visible go to 4

2. Has a wide, toothy smile Smilus toothyus
Is not smiling go to 3

3. Visibly crying Smilus dramaticus
Frowning Smilus upsettus

4. Eyes are symmetrical go to 5
Eyes not symmetrical go to 8

5. Eyes shaped like hearts  Smilus valentinus
Eyes are shaped as ovals go to 6

7. Mouth curved down, frowning  Smilus saddus
Mouth is a small circle Smilus suprisus

8. Has a pirate eye patch Smilus piratus
Does not have eye patch go to 9

9. One eye is much larger than the other eye  Smilus mutatus
One eye is winking Smilus winkus

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg