Sympatric Speciation.
Cladogenesis is a phenomenon of evolution that occurs by means of the divergence of taxa because of superb choice for the adaptation of sister populations from a commonplace ancestor to specific environments due to their anatomical, morphological, geographic, temporal, ecological, and/or ethological (behavioral) isolation.
An example of cladogenesis nowadays is the Hawaiian archipelago, in which stray organisms traveled across the ocean via ocean currents and winds. most of the species on the islands are not located anywhere else on this planet because of evolutionary divergence.
Mayr (1974) took into consideration cladogenesis and anagenesis the 2 brilliant phylogenetic strategies of biology. He stated that cladogenesis is the examination of the beginning and nature of the branching sample of the tree of existence.
Learn more about cladogenesis here
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More and more people moved westward to claim lands that were
once inhabited by Native Americans. This
was encouraged by the government. This
also led to several conflicts with Indians that would later lead to a war
between the Indians and U.S. army. In
the end, the west was completely settled completing the U.S. expansion to that
area.
Answer:
correct answer is option a and d
