After the Sinhalese people arrived in Sri Lanka, the Tamil people invaded Sri Lanka from A) southern India.

B) Nepal.

C) Bhutan.

D) Tibet.

Atsunami usually is the result of a. a nearby underwater earthquake. b. the winter monsoons. c. seismic activity in the eastern pacific ocean. d. hurricane-force winds.

Which of the layers of the earth has the following three characteristics? i. it is made of molten rock. ii. it has currents that are constantly moving. iii. earth’s plates float on top of its currents.

Based on the information in the graph, what can you conclude about humans in the world in general?