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The process of things changing gradually over time is known as evolution.
you would expect that the populations of animals are increasing or decreasing or because of no rainfall the plants will get dried.
evolution
Natural selection that leads to a great enough change in allele frequency over time in a population of organisms, evolution, and helped by environmental changes to create sub-populations of these organisms that can no longer breed among themselves and then are accounted new species.
This describes the process of evolution. When organisms evolve, they change over time in a way adaptive to their current environment.
Evolution i think
the answer is obviously evolution
Speciation is the process by which new biological species arise. It is part of the evolutionary process; how two or more populations of one species, when separated geographically, can gradually change over time in different ways, to become separate species.
it is evolution
descent with modification
The process that causes changes of the Earth's continents over time is called "Plate Tectonics."
Descent with modification
Yes. Diversity in the natural world is how it remains balanced through all the changes that occur over time. It allows for changes to occur gradually by promoting certain populations that are favorable and allowing ones that are not favored to be changed or replaced.
The process of things changing gradually over time is known as evolution.
evolution
Crossing-over