The degree of vertex D is if it is an indegree or outdegree, it is 1 degree in vertex D.
The last statement is the correct answer. However, the second question is theoretically historically correct, for Иосиф Сталин (Joseph Stalin) practically controlled the entire government of the USSR with his oppressive ultra-authoritarian non-democratic Stalinist-"Communist" regime.
<span>The remaining forms consist of the hardest rock.</span>
Physical weathering brakes it down while keeping the same substance.