Reasons why reaction of sodium with water is a chemical change?

Which experiment would most likely contain experimental bias

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell

Question#29: why does the tropical ocean have a greater temperature range than the temperate ocean?