What observation concerning the geographic distribution of species on the galápagos islands darwin formulate his ideas about the mechanisms of evolution? > view available hint(s) what observation concerning the geographic distribution of species on the galápagos islands darwin formulate his ideas about the mechanisms of evolution? > the south american fossils darwin found resembled species from similar environments throughout the world. darwin observed that most of the animals that inhabit these remote islands are not found anywhere else in the world, but they resemble south american species. furthermore, each island has its own unique species. darwin found evidence for dinosaurs in the sedimentary rocks on the galápagos islands.

Darwin observed that most of the animals that inhabit these remote islands are not found anywhere else in the world, but they resemble South American species. Furthermore, each island has its own unique species.

Explanation:

Galapagos Islands are located 900 km off the coast of South America. During his voyage, Darwin observed that many plant and animal species are present on these islands but are not found anywhere else in the world. He also observed similarities between the species found in the Galapagos Islands and South American mainland.

These islands are the volcanic islands and separated from the mainland. He assumed that the species of Galapagos Islands such as finches were isolated there for a long time. These species diversified into the empty ecological niche and gave rise to many species by adaptive radiation.

Adaptive radiation resulted in the evolution of unique life forms found on each of these islands. Similarities and differences between the life forms of these islands and the mainland provided the basis for Darwin's concept of natural selection.

hydroxyl -oh

alcohols, always polar, can form hydrogen bonds with h2o molecules

carboxyl -cooh  

cargoxylic acids, has acidic properties which is a source of hydrogen ions, found in cells in ionized for with a charge of oh-1

carbonyl > co

ketone if within skeleton, aldehyde if group is at the end of skeleton, k & a may be structural isomers, it determines 2 sugars (ketose & aldose)

amino -nh2

amines, acts as a base, it can pick up h+ ions from surrounding solution, ionized with charge of 1+

methyl ch2

addition to rna/dna affects and gene expression

phosphate -opo3 ²⁻

organic phosphates, contributes to negative charge to, molecule that it is a part of, and potential to react with h20

sulfhydryl -sh

thiols, cross-linking stabilize the protein, and it is structure

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.