What are the bonds in a secondary protein structure? (explanation)

How does a hydroelectric power plant converts energy into energy.

What happens to the atomic radius when an elctron is lost

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?