<span>This is the law of similarity. This is a heuristic that the brain uses to group things together that seem to be the same, but might have subtle differences. We tend to not be able to see those differences as easily, and our brains tend to group the objects together that have higher-level similarities (color, shape, size) and see them as a single object.</span>
X^2 - 2x - 8 = 0
(x - 4)(x + 2) = 0
x = 4 or x = -2
The positive root is x = 4
Phylogenetic classification has two main advantages over the Linnaean system.
-First, phylogenetic classification tells you something important about the organism: its evolutionary history.
-Second, phylogenetic classification does not attempt to "rank" organisms.
Linnaean classification "ranks" groups of organisms artificially into kingdoms, phyla, orders, etc. This can be misleading as it seems to suggest that different groupings with the same rank are equivalent.
