In the tree what are springwood and summerwood cells

Springwood have cells that are less compact, and are easier to break and cut. Summerwood brings stronger cells that are closer together, and many use this kind of wood for tables and chairs. 

The offspring will be blood type aa, bb, ab and oo or i

1) clean up you lab area2) dispose of the chemicals as instructed by your teacher3) put everything back where it belongs unless your teacher tells you otherwise4) dispose of gloves5) wash hands with soap and water