Q: What is composed of two strands of nucleotides in a double-helical structure? Choices: - molecule - RNA - bacteria - dna A:
dna

Q: What type of plate is an island arc found on? Choices: - continental - coastal - shear - oceanic A:
oceanic

Q: When wood is burned what kind of energy allows the wood to burn? Choices: - physical - radiation - carbon - chemical A:
chemical