കടൽത്തറകളിൽ ഭൂവൽക്കത്തിൻ്റെ കനം എത്ര ?
A60 km
B40 km
C30 km
D20 km
A60 km
B40 km
C30 km
D20 km
Related Questions:
Choose the correct statement(s) regarding the composition of Earth's internal layers:
The crust is rich in silica and aluminum (SIAL).
The mantle is composed predominantly of nickel and iron.