Consider this northern site of primary succession following the retreat of a glacier. what characteristics would you expect to see among the plant comprising the pioneer species?
a) variable temperature and light requirements
b) small, wind born seeds; survive in poor soils
c) highly competitive; can survive in low light
d) little root competition; low moisture requirements

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

What blood vessels carry blood to the heart? away from the heart?

What is the importance of dna replication to all living organisms?