.
6. What was the main goal of realists? (1 point)
to use humor to bring about change
to show the harsh side of poverty
to feature local color in their stories
O to sell their writing to newspapers

explanation:

may i ask what challenges?

i believe

clean air is essential for health and survival

clean air provides nitrogen gas for plant respiration

clean air supplies oxygen that enables living organisms to breathe

hope this

i am brianly

sorry if this doesn't

answer; ///attempts to change more than once behavior at the same time;

answer; /// the above statement is (false);