Dology
Which sentence best states the importance of using control groups?
Control groups provide a method by which statistical variability
can be reduced
Control groups allow comparison between subjects receiving
a treatment and those receiving no treatment
Control groups eliminate the need for large sample sizes,
reducing the number of measurements needed.
Control groups eliminate the need for statistical tests and
simplify calculations.

Ur very welcome for

There would be no evaporation so no water cycle

The one that would be the most effective means of controlling current water pollution of us surface water is : shutting down factories that discharge materials to the rivers.the largest sum of us pollution currently caused by factory-related substance

Here is your answer:                                                                                                                                                                                                                                                   formula for volume: base*width*height=                                                                                                 5*2*10=100                                                                                   your answer is 100cm.