Why are concerns like safety and recycling important in astronomy, even though the
research is often not conducted in a traditional lab?

1) this is the structure in the cell nucleus that houses a cell's genetic information

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

An atom of lithium-7 has an equal number of(1) electrons and neutrons(2) electrons and protons(3) positrons and neutrons(4) positrons and protons