cells in a lymph node that engulf and destroy damaged cells, foreign substances, and cellular debris are

How does science influence the decisions made about social, economic, and political issues?

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?

If t=tall and t=short what will be the physical appearance of the offspring the cross below? a. some will be tall and some will be short b. they will all be tall c. they will all be short d. they will be medium height