Question: Q: What compound gives tarnished copper it's green color? Choices: - bronze - zinc - brass - copper carbonate A:
Answer: copper carbonate

Question: Q: What is the only continent without amphibians? Choices: - Australia - Europe - Africa - antarctica A:
Answer: antarctica

Question: Q: What lens shape corrects myopia? Choices: - flat - convex - curve - concave A:
Answer:
concave