Binary covalent compounds are: check all that apply.

a. compounds that share electrons
.b metals and nonmetal ions
c. made from two nonmetals
d. compounds with very different electronegativities

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

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?