Please help me .Is platypus a mammal or a bird

Drag each label to the correct location on the image. each label can be used more than once. a scientist introduced mutations in a gene sequence isolated from bacteria. study the sequence, and identify the steps where the mutations may affect the formation of proteins. in the sequence, black letters stand for protein coding regions and red letters stand for noncoding regions. protein will not be changed. protein may be changed. attcgtgttc atcgtgttc atcgtattc attcgtattc

How does buring fossil fuels impact does carbon cycle? what large impact does this have on the envirnment?

Development of new communities in disturbed environments, such as a burned or a clear cut forest, is called