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Biological barriers are factors that prevent species migration, interbreeding, or free movement. What determines the barrier depends on the species and it's method of movement. For some species biological barriers are physical like bodies of water, mountains, or deserts.
I think it's environmental and genetic.
Some species are becoming extinct. It is due to various environmental factors. Deforestation, ozone depletion are some.
Biological species concept :)
Abiotic factors of a ecosystem are physical non living ones such as the weather, soil, a river, anything that's a not living.Biotic factors include biological influences on organisms such as the types of plants growing, and the species of animals in the ecosystem, and any factor that's living.Together abiotic and biotic factors determine the survival and growth of and organism.
Biological anthropologists are mainly interested in studying human evolution, genetics, variation in biological traits, and how humans have adapted to different environments. They investigate how biological factors have influenced the development of humans as a species and how they interact with cultural and environmental factors.
Biological barriers are factors that prevent species migration, interbreeding, or free movement. What determines the barrier depends on the species and it's method of movement. For some species biological barriers are physical like bodies of water, mountains, or deserts.
-species varieties -genotypes -environmental factors
Three factors that are limit dispersal of a species are physical barriers, competition, and climate.
Environmental change and variation :)
fundamental niche
Biological factor in the environment include the condition of a species' ecosystem and factors that can its limit growth. Having too much or not enough water, food, light, and heat can be detrimental to the survival of a species.
Biological evolution is the change of animal and plant life over time. Biological evolution is used to explain changes in finch beaks for example.
Chemical (lipophilicity, size) and biological (species, genetics).
Three factors that limit dispersal of a species are physical barriers, competition, and climate.
The morphological species concept differentiates species by their physical traits, basically. The biological species concept defines a species as generally organisms that breed with others of the same species; rather a genetic isolation concept. The phylogenetic concept is based on evolutionary relationships and is the concept used by cladists.
I think it's environmental and genetic.