Does the sentence "2012 state that "The similarities in ages and geographical distributions for C4c and the previously analyzed X2a lineage provide support to the scenario of a dual origin for Paleo-Indians." provide a valid answer to the question "What supports a scenario of dual origin for Paleo-Indians?"

A: yes

Does the sentence "Resistors allow control of the motor speed, although significant power is dissipated in the external resistance." provide a valid answer to the question "What can a resistor control?"

A: yes

Does the sentence "A major concern within this committee is the risk to Antarctica from unintentional introduction of non-native species from outside the region." provide a valid answer to the question "When did the Environmental Protocol become effective?"

A: no

Does the sentence "All member countries, with the exception of the Socialist Republic of Romania and the People's Republic of Albania participated in the invasion." provide a valid answer to the question "Which country did the Pact conquer?"

A:
no