Earth is divided into different zones based on physical properties. Which part is the soft, weak layer below the lithosphere?
Asthenosphere
B. Lower Mantle
C. Lithosphere
D. Inner core
查看答案
Which rock is the cooling and solidification of magma?
A. Metamorphic rock
B. Igneous rock
C. Sedimentary rock
The basic silicate structures are:
A. Independent tetrahedra
B. Single chain
C. Double chain
D. Sheet chain
E. 3-Dimensional framework
Is glacial ice a mineral?
微信支付 
支付宝支付