Evolution
Simple definition for evolution
Change over time
This evidence of evolution shows that ancient species share common features with modern species.
fossil record
Ex: a wolf hunting and eating a deer
predation
a simplistic view of energy flow in an ecosystem
food chain
this slow change in an ecosystem takes place when soil IS PRESENT
secondary succession
Mechanism of evolution that leads to adaptations
natural selection
This support shows us that two species share a common ancestor if they have similar development in the womb
comparative embryology
parasitism
a diagram that shows all of the possible feeding relationships in an ecosystem
food web
This would take place after a lava flow or glacial retreat
primary succession
Mechanism of evolution that happens by chance
genetic drift
These structures, which are now useless in a species, show us that two species shared a common ancestor; ex: whale pelvis
Vestigial structures
A very close relationship between two different species; exs: parasitism, commensalism, mutualism
symbiotic relationships
the ultimate source of energy in an ecosystem
the sun
non-native organism that has no natural predators and can reproduce rapidly; displaces native species
invasive species
These give rise to genetic variation
mutations
These structures have the same function, but DO NOT show common ancestory
analagous structures
These species have an extremely profound role in an ecosystem; loss of these leads to trophic cascade
keystone species
this much energy is lost as heat between each trophic level
90%
Succession leads to these stable communities
climax communities
This British naturalist first proposed the theory of evolution by natural selection
Charles Darwin
Homologous structures, or similar structures that show common ancestory, fall into this category of support for evolution
comparative anatomy
ex: sea anemone and nemo
commensalism
These eat ONLY plants
herbivores or primary consumers
these are the pioneer species in primary succession
lichen and mosses