Question

The
Darwin collected and shared profoundly changed the way scientists viewed the natural world. The theory of
that Charles Darwin developed proposed that the Earth was much older than previously believed - billions of years old rather than thousands. The similarities that he observed between living things and
led him to believe that living species have common ancestors. Last, he hypothesized that all organisms must evolve, or change, gradually over the course of time.

Charles Darwin discovered many fossils while on his journey. He observed that the fossils he found had
with species living in the areas where he was studying. He concluded that the similarities showed direct relationships between the two species. The differences represented how species evolve, or change, over long periods of time. Several generations can pass before we can see new characteristics in a species.
similarities and differences
only differences
evidence
revolution
only similarities
hypothesis
evolution
fossils

Answer 1

The evidence Darwin collected and shared profoundly changed the way scientists viewed the natural world. The theory of evolution that Charles Darwin developed proposed that the Earth was much older than previously believed - billions of years old rather than thousands. The similarities that he observed between living things and fossils led him to believe that living species have common ancestors. Last, he hypothesized that all organisms must evolve, or change, gradually over the course of time.

Charles Darwin discovered many fossils while on his journey. He observed that the fossils he found had similarities and differences with species living in the areas where he was studying. He concluded that the similarities showed direct relationships between the two species. The differences represented how species evolve, or change, over long periods of time.