How does music affect plant growth? To answer this question, Dr. Anderson set up an experimental chamber and exposed a group of 15 bean plants to the same 60-minute rock CD twice a day, at 9:00 A. M. and 9:00 P. M. Another group of 15 bean plants was placed in a different chamber with the same temperature, light, and humidity, but these plants weren't exposed to music. One month later, the heights and masses of all 30 plants were measured and compared. In this example, what's the independent variable? Question 3 options: The light The use of music The temperature The time the experiment was conducted

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false

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