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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
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