Observation: i want to know what effect salt has on the growth of grass. so i measure out 3 equal
sized squares of grass out the back of the building. the first square of lawn l water with 5 liters of pure
water from a watering can every day. the second square of lawn i water with 5 liters of pure water
with 2 grams of salt mixed in, every day. the third square of lawn i water with 5 liters of pure water
with 4 grams of salt mixed in, every day. i measure the height of the grass after 14 days and note the
following observations. the first square is green and 15 cm high. the second square is green-yellow
and 6 cm high. the third square is yellowy-brown and looks dead and is only 2cm high.
what could we infer about the affect salt has on the growth of grass?