Which of the following is NOT an adaptation people have made to live in the Sahel? A. cooking with coal to save firewood
B. planting crops that survive in dry places
C. using shifting agriculture methods of farming
D. none - all of the above are adaptations that are used

"spheres" is the name of the four subsytem

Why are fossils of organism's from the phanerozoic eon much more likely to be found than fossils of organisms from any other eon? a. more organisms present during the phanerozoic eon had soft body parts. b. organisms present during the phanerozoic eon were all microscopic. c. more organisms present during the phanerozoic eon had hard body parts. d. organisms present during the phanerozoic eon are the most ancient life forms.

What causes the cyclical changes in the appearance of the moon?