Problem: Does "The alloy of copper and nickel, called cupronickel, is used in low-denomination coins, often for the outer cladding." answer the question "what is the alloy of copper and nickel used for?"

A: yes

Problem: Does "A wide range of beliefs and practices is found across the world among those who call themselves Christian." answer the question "While Christianity is ultimately one belief, a wide range of what is found among the different denominations and sects?"

A: yes

Problem: Does "In primates, however, the percentage is much higherin humans it rises to 2025%." answer the question "The energy used for metabolism of the brain in humans is what percentage?"

A:
yes