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Cyanobacteria

photosynthetic bacteria responsible for our oxygenated atmosphere; called blue-green algae

defined as

Fossils

traces of organisms that lived long ago

bacteria

Organisms

supported by

Comparative

Biology

defined as

examined by scientists

Evolution

Hominids

primates that walk upright, have large brains,

and opposable thumbs, and hae only one living

genus today

Vestigial organs

the study of homologous structures amond different organisms

important person

characteristics

organs that are present in current organisms that do not have a function and are thought to have once had a function in early organisms

examples

Opposable thumb

a thumb that can touch every finger

and allows one to grasp and hold objects easily

Charles Darwin

Homo erectus

Bipedal

walking on two legs

created

Austalopithecus

afarensis

Natural Selection

definition

Effects on organisms

the environment favors certain traits and

organisms with those traits are better able

to survive and pass on such traits to their

offspring; survival of the fittest

Adaptations

Isolation

types

Temporal

Behavioral

Adpatation

Structural

Adaptation

Gean adaptation that is

behavior of an organism

Geographic

an adaptation that is a physical

part of an organism's body

Genetic

Physiological

Adaptation

Reproductive

an adaptation that is a chemical

Behavioral

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