A system that relates evolutionary history to rock layers in the geologic column is called a geologic ____ scale.
A group of organisms that are structurally similar and can interbreed to produce fertile offspring
Darwin's idea that all organisms come from common ancestors and change a little with each generation is called descent with _______.
The theory that the universe began in a very dense and very hot state and then rapidly expanded. (2 words)
Made predictions about what happens if population growth is unchecked and grows beyond the food supply.
In a newer theory of evolution than Darwin's, these are what could produce favorable variations in a population that could then be acted on by natural selection.
The method of determining the age of an object by measuring the amount of a radioactive substance in the object is called radiometric ____.
Technique that uses rates of molecular change to calculate at what point in the past two species diverged is called a molecular _____.
Down
Inheritable traits that improve the reproductive success of an organism
Slow, gradual change in the genetic material and proteins of organisms is called _______ evolution.
A fossil of an accepted age that is used to assign ages to layers of the geologic column is called a(an) _____fossil.
A structure that seems to have no function in an organism and is thought to be left over from the evolutionary process.
Organs or bone structures that are similar in different organisms and are thought to show evolutionary relationships are called _______ structures.
Idea that in any generation of organisms, those that have the most productive success will pass their characteristics on to the next generation. Called survival of the _________.
Wrote On the Origin of Species
The variation in the rates of survival and reproduction among the different phenotypes within a species that tend to make some phenotypes more common than others is called _______ selection.
Believed that if an organism acquires a useful characteristic, it can pass this along to its offspring.
Believed that laws of nature and forces of geology operated slowly and at the same rate over time. His idea is called uniformitarianism.
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It prints on two pages.
Big puzzles won’t always print on one page — the clues and grid are the smallest we could make them while keeping them readable for everyone.
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