Hand washing is of importance for its hygenic and cleanliness is important and reduces bacteria and potential viruses and its best if The average human washes their hands if they engage in activities that are messy or not hygenic and its common and necessary that washing ur hands is something we humans do a lot of. Hope this helped.
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!
D is the right answer
But then again it is actually wrong... Either way D is the answer
Sugar is needed for scientists to grow plants