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Per 2: Patterns in Evolution

Across
Interaction between two different organisms living in close physical association, typically to the advantage of both
Leaf-cutter ants grow on a species of fungus for food.
Plover birds pick off food from between teeth of crocodiles; crocs benefit from cleaning.
Different species must often adapt to similar _______
Closely related species evolve in different directions in different environments, becoming less similar (e.g. Galapagos finches)
Process in which two or more species evolve in response to changes in each other
Down
Plant develops toxic chemicals to prevent herbivores from eating it.
Whale flipper and shark fin
Evolution towards similar characteristics in unrelated species (e.g. wings in different species)
Monarch butterflies only lay their eggs on milkweed plants
Evolution through natural selection is NOT _______
When species evolve, these can been seen over time