How would a geologist use absolute dating to determine the age of sedimentary layers? a. by dating the age of several radioactive elements in a sedimentary rock layer b. by dating the age of intrusions and extrusions near a sedimentary rock layer c. by comparing the relative ages of several sedimentary rock layers d. by identifying fossils in nearby intrusion and extrusions and determining their age

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.