In the second experiment, students place about a millimetre of salt in the bottom of a 250 mL beaker and two-thirds fill the beaker with soil.
(students; place; about a millimetre of salt in the bottom of a 250 mL beaker and two-thirds fill the beaker with soil; L:In the second experiment)
students
place
about a millimetre of salt in the bottom of a 250 mL beaker and two-thirds fill the beaker with soil L:In the second experiment