What new technological advances in weapons were introduced during the Civil War?

Asnail, elodea (aquatic plant), or both were added to the tubes and they were stoppered. tubes were placed under a grow light for 24 hours and the results recorded. the test tubes were then covered for 24 hours to produce a dark environment and the results recorded. which statement best explains the change in test tube d from the light setup to the dark setup.

2polnis which of the following is an advantage of an in vitro experiment?me

What organs comprise the respiratory system of a bird