1. Answer;
They evolved separately as they moved north and became two separate species.
Explanation;
The greenish warblers weren't geographically isolated, but they migrated around the Tibetan Plateau, evolving separately until they were no longer able to interbreed when both species (East and West) contacted in Siberia.
Greenish warblers were thought to have evolved from a single ancestral population that gradually diverged into two new species as it expanded northwards around the Tibetan plateau.
2. Answer;
- Their plumage patterns.
- Genetics and history
Explanation;
West Siberian greenish warblers (P. t. viridanus) and east Siberian greenish warblers (P. t. plumbeitarsus) differ subtly in their plumage patterns, most notably in their wing bars, which are used in communication. While viridanus has a single wing bar, plumbeitarsus has two. Around the southern side of the ring, plumage patterns change gradually.
Additionally, the two northern forms viridanus and plumbeitarsus are highly distinct genetically, but there is a gradient in genetic characteristics through the southern ring of populations. The greenish warblers were once confined to the southern portion of their range and then expanded northward along two pathways, evolving differences as they moved north. When the two expanding fronts met in central Siberia, they were different enough that they do not interbreed.
The Swedish Empire (Swedish: stormaktstiden, "the era of great power") refers to the Kingdom of Sweden's territorial control of much of the Baltic region during the 17th and early 18th centuries, a time when Sweden was one of the great European powers.[1] The beginning of the Empire is usually taken as the reign of Gustavus Adolphus, who ascended the throne in 1611, and the end as the loss of territories in 1721 following the Great Northern War. In Swedish history, the period is referred to as stormaktstiden, literally meaning "the Great Power era".[1]
After the death of Gustavus Adolphus in 1632, the empire was, over lengthy periods, controlled by part of the high nobility, most prominently the Oxenstierna family, acting as tutors for minor regents. The interests of the high nobility contrasted with the uniformity policy (i.e., the upholding of the traditional equality in status of the Swedish estates favoured by the kings and peasantry). In territories acquired during the periods of de facto noble rule, serfdom was not abolished, and there was also a trend to set up respective estates in Sweden proper. The Great Reduction of 1680 put an end to these efforts of the nobility and required them to return estates once gained from the crown to the king. Serfdom, however, remained in force in the dominions acquired in the Holy Roman Empire and in Swedish Estonia, where a consequent application of the uniformity policy was hindered by the treaties by which they were gained.
After the victories in the Thirty Years' War, the climax of the great power era was reached during the Second Northern War, when their primary adversary Denmark was neutralized by the Treaty of Roskilde in 1658. However, in the further course of this war as well as in the subsequent Scanian War, Sweden was able to maintain her empire only with support of her closest ally, France.[2] Charles XI of Sweden consolidated the empire and ensured a period of peace, before Russia, Saxony and Denmark started a concerted attack on his successor, Charles XII. After initial Swedish victories, Charles secured the empire for some time in the Peace of Travendal (1700) and the Treaty of Altranstädt (1706), before the Battle of Poltava (1709) finally brought the great power era of Sweden to an end.
Answer:
The first three of these postwar amendments accomplished the most radical and rapid social and political change in American history: the abolition of slavery (13th) and the granting of equal citizenship (14th) and voting rights (15th) to former slaves, all within a period of five years
Explanation:
War can wipe out a generation of men and cause a slight dip in the birth rates. Over 60 million people died in World War II. Women end up raising children on their own because their husbands died in the war. The anxiety, guilt, grief and other emotions disrupts families and changes social patterns...
-It would take weeks for information from one place to reach another, or to travel from one place to another
- They most likely had issues with religion,rebellions, and government issues.
- Keeping the kingdom intact was hard because of invasion Longer borders cost more to defend against outsiders. Egypt struggled to protect their expansive borders against invaders.
- They had to have a big army that cost a lot of grain to stay fed
-The erosion of the authority of the Pharaoh and the accompanying growing power of the nobility and priesthood. This led to the decentralization of power in Egypt and constant power struggles and civil war.
Answer:
All of the above
Explanation:
that is because sport shoes are expensive and suits to the athlete neeeds
