When an object of weight w is suspended from the center.

What is the leading cause if water scarcity throughout much of the world

What is 7/81 as a percentage? round your answer to the nearest tenth of a percent.

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.