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.
Market Economy is the economy that is the most commonly used in the United States such as grocery stores and restraunts
Command economy is a Economy completely runned by the government Countries who have one is North Korea, and Cuba
Traditional is a non timed pasted economy system that mainly the American Amish use
Answer:
the answer is D. a declaration of war against Japan
Explanation:
The French and Indian War impacted the colonies economically. As a result of the war, the British were able to expand their influence in the Ohio Valley. This meant the British would profit even more from the lucrative fur trade now that France had left the area.
B most likely I learned this yesterday but forgot I think its correct but we have Google for these questions
