What does a chromosome consist of

Which experiment would most likely contain experimental bias ?

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

This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient