Biology, 03.08.2019 04:00 oseniiyabode123
Why does water move along its concentration gradients?
Answers: 1
Biology, 21.06.2019 20:00, u8p4
Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection
Answers: 3
Biology, 22.06.2019 00:00, bettybales1986
As a small change in a person's dna can cause a genetic disorder
Answers: 3
Biology, 22.06.2019 03:00, elishaheart21
Which statement best describes the relationship between an allele and a gene? question 1 a. an allele is a variation of a gene that can be expressed as a phenotype. b. an allele is the part of a gene that attaches to messenger rna molecules. c. an allele is a segment of a dna molecule that controls replication of a gene.
Answers: 3
Why does water move along its concentration gradients?...
History, 23.07.2019 12:10
History, 23.07.2019 12:10
Chemistry, 23.07.2019 12:10
Chemistry, 23.07.2019 12:10
History, 23.07.2019 12:10