How many protons and electrons are present in a vanadium atom

How have the greenhouse gasses increased from the year 2000 to 2018

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?

Light waves travel than sound waves.