A glacially formed lake within a cirque is called a
A) roche moutonee.
B) cirque.
C) tarn.
D) horn.
Question 2
Judge the following sentence according to the criteria given below. Oxygen 18 and Oxygen 16 are called stable isotopes because they are the stable products of radioactive decay.
A) The assertion and the reason are both correct, and the reason is valid.
B) The assertion and the reason are both correct, but the reason is invalid.
C) The assertion is correct but the reason is incorrect.
D) The assertion is incorrect but the reason is correct.
E) Both the assertion and the reason are incorrect.