What are biological species?
Modes of reproduction differ between species.
This reporting has uncovered widespread problems, including poor monitoring of endangered species, major delays in the listing of threatened species and ecosystems, failure to develop, update and implement recovery plans for species and habitats threatened with extinction, failure to list key threats to species, failure to protect important habitat, and threatened species funding being used for projects that do not benefit threatened species.
The second issue concerns species pluralism.
The species category is the class of all species taxa.
God created species and an eternal essence for each species.
Species having relatively small ranges are called endemic species.
(For a detailed discussion of species concepts see the entry on species.)
These species concepts assume that species are lineages and thus individuals.
The second is whether biologists should be species pluralists or species monists.
The Ecological Species Concept identifies those species unified by stabilizing selection.
Contemporary biology can explain variation within a species without positing a species’ essence.
The Ecological Species Concept defines a species as a group of organisms that share a distinct ecological niche.
Microcos (nearly 60 species), Corchorus (40–100 species), and Triumfetta (about 150 species) are pantropical.
Asteropeiaceae (eight species), Physenaceae (two species), and Barbeuiaceae (one species) are endemic to Madagascar.
Given that there are different types of species, one might wonder what feature causes these different types of species to be species?
Invasive species, also called introduced species, alien species, or exotic species, any nonnative species that significantly modifies or disrupts the ecosystems it colonizes.
Most of the remaining species belong to four other well-known families: Anacardiaceae (about 600 species), Burseraceae (550 species), Meliaceae (621 species), and Simaroubaceae (95 species).
Like the biological species concept, the genetic species concept considers which individuals are capable of interbreeding, as well as the amount of genetic difference between populations of that species, but it may also be used to estimate when the species originated.
Many crops are native to Southeast Asia, including black pepper, sugarcane (Saccharum species), banana (Musa species), nutmeg (Myristica fragrans), taro (Araceae species), arrowroot (Maranta species), coconut (Arecaceae species), clove (Syzygium aromaticum), yam (Dioscorea species), and citrus fruits.
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