drought – n. a long period of time during which there is very little or no rain

replenish – v. to make full or complete once more

access – n. the right or ability to approach, enter, or use

glacier – n. a large body of ice moving slowly down a slope or valley or spreading outward on a land surface

atmosphere – n. the whole mass of air that surrounds the Earth : the gas surrounding a heavenly body (as a planet)