Answer:
Joseph Stalin
(Soviet political leader)
Answer:
you too happy thankgiving and have a merry christmas
can i get brainliest
Explanation:
Terracing worked best in areas with large plains.
Terracing was so effective in ancient Athens that it produced enough food that it could be traded to other places.
The ancient Athenians used terracing to grow potatoes, corn, and squash.
Ancient Athens invented the practice of terracing.
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 American colonists were driven to declare war on the British Empire, because they were being oppressed, and not treated as citizens. They believed that the British had no right to impose more taxes on them, and so declared independence
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