A researcher was interested in tracking the number of birds that became totally coated with oil and needed to be rescued during the BP oil spill in the Gulf of Mexico in her research area. Everyday she would go out in her boat and rescue the birds that were coated. At the end of each day, she recorded the total number of birds that she rescued. What type of graph would she use to get an estimate of center and spread?A. dot plot B. bar chart C. pie chart D. scatterplot

Which of these describes a social effect of the civil war? a) fields were left unplanted because the slaves had been freed and much of the male population was unavailable to plant or harvest crops. b) over 600,000 men died, mostly because of the lack of food, clean water, and hygienic medical practices. c) after the emancipation proclamation was issued, african americans were allowed to join the union army. d) lincoln’s assassination after the surrender caused a disruption in the rebuilding of the nation.