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: The correct answer is A; <em>Women were tasked with educating the next generation, and thus needed to be educated themselves. </em>
Explanation:
The phrase or term Republican Motherhood was started in the 1980s. This idea was based on books written by John Locke. He has several ideas that were based on revolutionary ideas of republicanism.
Christians loved this idea because mothers would be able to pass down the family's religious views and values to generations.
Women were then opened many doors to education that they did not have before. This was so that they could educate their children about things that they learned. They also had more of a public role in women's rights, abolitionism, and had more chances of being teachers, etc.
Answer:
C) Southern states prevented African Americans from voting by charging them to do so.
Explanation:
Poll taxes were a popular method used by Southern states after the Civil War to stop African American men from voting. Poll taxes were used after African American men gained the right to vote with the 15th amendment to the US Constitution. This, along with grandfather clauses and literacy tests, were meant to limit African American pariticpation in local, state, and federal elections.
These types of barriers to voting were eliminated during the Civil Rights movement of the 1960's.
Human environmental intertaction
Its happen cultural diffusion and from trade people can earn money
