Extrusive igneous rocks cooled and hardened ________ the Earth's surface, resulting in ________ grained rocks. than intrusive igneous rocks.
A) beneath; finer
B) at; coarser
C) beneath; equally
D) at; finer
E) beneath; coarser
Question 2
Based on the working estimate, approximately how many plants have yet to be identified?
A) 10,000 B) 25,000 C) 50,000 D) 75,000 E) 100,000