Which of the following describes all animals A. all animals have back bones
B. all animals are multicellular
C. all animals control their own body temperature
D. all animals are vertebrates

What kind of ion is contained in salts that produce an acidic solution? a positive ion that attracts a proton from water a positive ion that releases a proton to water a negative ion that attracts a proton from water a negative ion that releases a proton to water

Smog is the term used to describe the combination of fog and smoke

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?