What is the relationship between changing CO2 emissions and CO2 concentration?

The body is protected against harmful flu viruses by

What is a codon and where is it found

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