What evidence from the photo helps you conclude that the object is a comet and not a star?

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.

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.

If t=tall and t=short what is the likelihood that the offspring will be tall? a.0% b.25% c.50% d.75%