I think the answer is True but I’m not 100% sure
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.
Answer:
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Answer:
Truman is concerned about Chinese communist coming forward
MacArthur said bring them on
Truman gives him the go ahead and MacArthur gets eye sight to the river but Chinese communist push him back to the 38 parallel
MacArthur said he is going to destroy china and Truman tells his to chill out and MacArthur is publicly disagreeing with Truman (like posting something on face book for public attention)
Explanation:
Answer:
The Opium War, usually the Opium War refers to the First Opium War, which the British often refer to as the First Sino-British War or "Trade War", which was an unjust war of aggression launched by Britain against China from 1840 to 1842, and also the beginning of China's modern history of humiliation.
In 1840 (the twentieth year of Daoguang), the British government decided to send an expeditionary force to invade China under the pretext of Lin Zexu's Humen tobacco sales. In June 1840, 47 British ships and 4,000 army personnel, led by Rear Admiral George Yilu and Yi Lu, the commercial supervisor in China, arrived outside the mouth of the Pearl River in Guangdong province, blockaded Haikou, and the Opium War began.
The Opium War ended with China's defeat and the cession of land in reparations. China and Britain signed the Treaty of Nanking, the first unequal treaty in Chinese history. China began to cede land, pay indemnities, and agree on tariffs to foreign countries, which seriously endangered China's sovereignty, began to degenerate into a semi-colonial and semi-feudal society, lost its independent and autonomous status, and promoted the disintegration of the small-scale peasant economy. At the same time, the Opium War also opened a new chapter in the history of the resistance of the Chinese people to foreign aggression in modern times.
Explanation:
