Scientists study the evolution of species by examining the fossil record, analyzing the genetic makeup of different species, and testing animals on tasks that measure their mental skills.
They also look for clues to changes in different characteristics such as brain size, skull shape, locomotion, and jaw size.
• Evolution is the process by which organisms change over time as a result of their environment
• Evolution occurs through natural selection, which is a force that has shaped every organism living today
• Scientists who study early humans rely on fossil evidence to help them sort out how our ancestors evolved over time
• When looking at the fossils, scientists look for clues to changes in different characteristics such as brain size, skull shape, locomotion, and jaw size
Evolution: Changing Species Over Time - National Geographic Society
• The theory of evolution by natural selection was first proposed by Charles Darwin and Alfred Russel Wallace in the 1800s.
• The theory is based on the idea that organisms change over time due to natural selection, a process by which the fittest organisms survive and reproduce.
• The theory has been tested and is now considered a scientific theory.
Theory of Evolution | National Geographic Society
• Scientists study the evolution of species by testing animals on tasks that measure their mental skills.
• The tasks used in these studies vary depending on the species being studied, but usually involve some form of self-control.
• The team's findings suggest that intelligence is driven by the need to keep track of a wide range of food, rather than by the size of an animal's brain.
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