We think that the blue light will grow the tallest because it is the colour of the sky outside and it has a low spexctrum, likw the sun.

NA

controled- type of plant, amount of water, amount of light each day, and size of  planter

manipulated - colour of light

responding- which plant grows the tallest

plant seeds, watch as they grow, take measurments of  them every day, water them every day