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Evolution

Author: Emily Hayes
Across
Similar organisms share certain characteristics during beginning stages and development.
A way to find the actual age of rocks and fossils by using the decay rate and the amounts of radioactive material.
The remnant of a once used anatomical structure. Might have been helpful once, but not used for survival anymore.
A historical sequence of life indicated by fossils found in layers of the Earth's crust.
Down
The individuals in a population are slightly different from one another.
Tthe period between the birth of one generation and the birth of the next.
The most specific group of organisms that can mate with one another to proce fertile offspring.
A scientist that developed modern theory of Evolution. He said that organisms evolved from a common ancestor.
The process when two populations become so different they can't interbreed anymore.
TThe process when populations accumulate inherited changes over time.