Question

18 When investigating the
importance of different mineral
salts, why was a solution used
for each experiment, rather
than a mixture of soil and the
solution?​

Answer 1

Answer:

“soil” is a term that may contain a multitude of constituents. When investigating the effect of a particular salt on plant growth, it is common practice to eliminate the potential effect of other constitents in the soil--some of which can act at very low concentrations that may not be noted in a soil's analysis. Hence, dissolving the salt in water eliminates the potential effects of micro-concentrations of other constitents that may be found in “soil”.

Answer 2

Answer:

mark me as brainlest plzzz mam

hope it'll help.

Explanation:

soil” is a term that may contain a multitude of constituents. When investigating the effect of a particular salt on plant growth, it is common practice to eliminate the potential effect of other constitents in the soil--some of which can act at very low concentrations that may not be noted in a soil's analysis. Hence, dissolving the salt in water eliminates the potential effects of micro-concentrations of other constitents that may be found in “soil”.