Answer:
Tundra ecosystems are treeless regions found in the Arctic and on the tops of mountains, where the climate is cold and windy
Explanation:
The chronometer is a device to measure time in a period of time, therefore not a correct answer.
Answer:
Country which shares a border with the northernmost part of China : RUSSIA
Looking at the map I attached, you will notice that the northernmost part of China is to the North East between 120° E and 135° E. The country that borders this area is Russia.
Countries located between 105° E and 135° E lines of longitude:
Looking at the map and the lines of longitude circled, countries between these two lines of longitude are:
- North Korea
- South Korea
- Philippians
They move in the night sky because of Earth's rotation on its axis, and its revolution around the Sun.