Which is not the following of the ways that bacteria can be helpful to human? A. They prevent harmful bacteria on your skin from getting into your body.

B. they break down food in your digestive system

c. they act as decomposers in ecosystem

d. they prevent the spread of the common cold

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

Which of the following is required of a new drug?me

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land