Answer:
the second question should be along the staircase
700 mL ....................
You are testing which fertilizer makes the radishes grow the fastest.
factors you should control: sunlight exposure, water amount, fertilizer amount.
Measure: check the rows of radishes to see how much each row has grown in comparison to the others. Whichever row with the healthiest radishes has the best fertilizer.
Wind abrades rock by sandblasting, this is the process in which wind causes the