What is the BEST explanation for why thylakoid membranes are flat and stacked? A. to fit more into a chloroplast
B. to increase surface area for light absorption and cross-membrane traffic
C. to increase the color of the leaf as camouflage from herbivores
D. to hold more ATP

3. draw a topographic map that displays the following features: (4 points each) a. the contour interval is 20 meters. b. the point of lowest elevation is 960 meters. c. the point of highest elevation is 990meters. d. there is at least one sinkhole or depression, at any elevation. e. there is at least one steep slope and one gentle slope.