Astudent is investigating the question "which increases a person's breathing rate more after three minutes, lifting five-pound
weights or lifting ten-pound weights? she designs an experiment to test the question. which statement most likely describes
the dependent variable in her experiment?
o the breathing rate is the dependent variable because it can be affected by varying weights.
o she cannot measure the dependent variable until she finishes the experiment.
the time of exercising is the dependent variable because it can be measured.
o the five- and ten-pound weights are the dependent variable because they can affect the breathing rate.
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Cell specialization occurs by the process ofa. reproductionb. differentiationc. maturationd. growth

Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings

This map shows how climate change might affect precipitation patterns in the great plains of the united states by the end of this century. brown shoes a decrease in percipitation, and blue shows an increase. the maps differ based on the predictive levels of green house emissions. the maps shows that northern area should get a. more pracipations regardless of emmissions b. less pracipation, regardless of emmissions levels c. more precipitation, but only when emission levels.southern areas show a. more pracipations regardless of emmissions b. less pracipation, regardless of emmissions levels c. more precipitation, but only when emission levels.to use these maps to prepare for natural disasters in the great plains, scientist need to ask? a. how many tons of emissions were used at the basis of the map.b. which types of fossil fuels are used in the great plains c. if you think the above is wrong it's probly c the question is cut off