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The term natural selection is most often defined to operate on heritable traits, because these directly participate in evolution. However, natural selection is "blind" in the sense that changes in phenotype can give a reproductive advantage regardless of whether or not the trait is heritable.
Further, while the related concepts of "survival of the fittest" and "natural selection" are often used interchangeably, they are not the same: natural selection is not the only form of selection that determines biological fitness (see sexual selection, fecundity selection, viability selection, and artificial selection). [138] [139] [140]
Environmental anthropology is a sub-discipline of anthropology that examines the complex relationships between humans and the environments which they inhabit. [1] This takes many shapes and forms, whether it be examining the hunting/gathering patterns of humans tens of thousands of years ago, archaeological investigations of early agriculturalists and their impact on deforestation or soil ...
Ecological anthropology is a sub-field of anthropology and is defined as the "study of cultural adaptations to environments". [1] The sub-field is also defined as, "the study of relationships between a population of humans and their biophysical environment ". [ 2 ]
"NCT argues that niche construction is a distinct evolutionary process, potentially of equal importance to natural selection. The skeptics dispute this. For them, evolutionary processes are processes that change gene frequencies, of which they identify four (natural selection, genetic drift, mutation, migration [ie. gene flow])... They do not ...
Natural selection: The survival and reproductive rate of a species depends on the adaptability of the species to their environment. This process is called natural selection . [ 15 ] Some species with certain traits in a population have higher survival and reproductive rate than others ( fitness ), and they pass on these genetic features to ...
Natural selection, the process by which individual organisms with favorable traits are more likely to survive and reproduce. Sexual selection , the theory that competition for mates between individuals of the same sex results in differential mating and reproduction.
Sand is a granular material composed of finely divided mineral particles. Sand has various compositions but is defined by its grain size. Sand grains are smaller than gravel and coarser than silt. Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. [2]