In ancient Greece, Aristotle developed a system of classification which was used for the next 2000 years to describe relationships between living things. Which of the following questions would be most difficult to answer based on Aristotle's classification of living things? Are cows more complex than oak trees? Are tomato plants higher or lower than snails? Which species shows less complexity, a cat or a dog? Which organism is lower, a squirrel or a lobster?

Question

In ancient Greece, Aristotle developed a system of classification which was used for the next 2000 years to describe relationships between living things. Which of the following questions would be most difficult to answer based on Aristotle's classification of living things?   Are cows more complex than oak trees?   Are tomato plants higher or lower than snails?   Which species shows less complexity, a cat or a dog?   Which organism is lower, a squirrel or a lobster?