The kidneys respond by returning less salt to the blood
C) The number of primary consumers will increase because since the wolf snake and hawk are gone, there won't be anybody who will eat the primary consumers aka grasshopper and rabbit
Hope this helps!
In an experiment, using the elodea stalk, you are able to expose more underlying tissue and the process can be executed more quickly and it's easy to replicate the natural position for a more realistic result.
hope this helps