What does the “ rainbow in the sky” symbolize O Any beautiful work of nature
O The end of a rainstorm
O The end of a difficult time
O birth

Are these strong bases, neutral, strong acids, weak acids or weak base household bleach (ph=12.6) fluid in a car's battery (ph of less than 1.0) milk (ph=6.7) stomach contents (ph=2.2) pure water (ph=7)

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f

Three applications for admission to a local university are checked, and it is determined whether each applicant is male or female. the number of sample points in this experiment is