Answer:
The properties of the asthenosphere are:
1. highly viscous
2. mechanically weak
3. ductile region of the upper mantle of the Earth
1) F (Tien Shan is a mountain range)
2) T
3) F
4) F (Karakum is a desert)
5) T
The Abyssal plains are my answer.
Siberia covers the majority of Russia