Why doesnt have South Africa in their countries?​

What substance acts to prevent sudden ph changes in bodily fluids?

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

How would you expect the mrna codons that code for the amino acids that make up hemoglobin to compare between humans