The earth's atmosphere is divided into five layers. in the middle layer is where most foreign objects, such as meteors, will burn up as they enter the atmosphere. a) exosphere b) mesosphere c) stratosphere d) troposphere

Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false

Which element is found in both dna and proteins

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