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Biology I: Evolution 18-19

Across
Age of Earth
When the entire population of a species dies off
When an animal copies or mimics the form of something else
LUCA for teeth
Differences between organisms of the same species
The number of years it takes for half of a radioactive chemical to turn into a stable chemcial
The variety of species on Earth
Physical characteristic that demonstrates how certain species are related through a common ancestor
Change in species over time
Historical record provided by fossils
Type of rock where fossils are commonly found
Predator/prey relationship where one evolves in response to changes in the other
Type of camouflage when an animal blends in with its background
Down
Acronym for the first living thing that was the ancestor to all creatures
Period of geologic time when most organisms were soft-bodied and did not make many fossils
Discovered traits were inherited from parents
Organism that exhibits traits common to both an ancestral group and its descendants
Factor affecting natural selection where different species fight over resources
A behavior or physical characteristic that allows an organism to survive and reproduce in its environment
Drives evolution, fittest organisms survive
Type of camouflage when a pattern like stripes or spots is used to confuse other organisms
Change in the DNA of an organism
Gap in the fossil record