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3 years ago

Why can’t the evolutionary relationships between certain species be explained thoroughly?

Biology

1 answer:

vredina [299]3 years ago

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Answer:

Phylogeny: It is related to evolution dealings in the evolutionary development of a species. It is represented by different ways vertical or slanted.

Phylogenesis: It refers to the evolutionary relationships among species.

Phylogenetics: It is determination or estimation of evolutionary relationships among groups of species, organisms and genes.

Phylogenetics is a field of biology which is used to find relationships among different organisms. This relationship is showing through a tree (used to model actual evolutionary relationship of organisms). Ancestral divided into two descendant species because closely related organisms are shown in near branches. If there is too much divergence between two species its mean they are not closely related.

The history of speciation (one species becomes divided into more than one new species) tells us how these species are related to each other. If they evolve to be separate species relatively recently then they are "closely relative" similarly if they evolve to be separate specie long above then they are "distant relatives". For example orthologs are genes in different species that evolved from common ancestor gene by speciation; they retain same function in the course of evolution.

Explanation:

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There exist different types of mines depending on the extraction magnitude and methods.

The method used to extract minerals depends on the mineral deposit, the deposit size and deepness, and the work costs.

The environmental and health problems that mining activities produce involve the extraction process, transport of material, mineral processing, and the residues and wastes left at the extraction site that remain there for too much time and disperse to other areas polluting water, air, and soil.

Among the types of mines, the less destructive might be subsurface mining.

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Other forms of life are affected as well because of this pollution.

Workers are exposed to even more dangerous conditions.

Although subsurface mines have less permanent damage to the environment, they are still damaging and lack control policies.

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2 years ago

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