What did a qin emperor build to make china's defenses stronger?

Which of the filling is an effect of the uneven heating of the earth by the sun ? a sea breeze a land breeze a convection current all of the above

Which anatomical feature would you expect to find in the fossil remains of a nocturnal species?

The magnitude of an earthquake is typically calculated according to the scale.           a. mercalli   b. fujita   c. richter   d. saffir-simpson