What can happen when groundwater is depleted to irrigate crops?

A. Increase in ground altitude

B. Decrease in soil salinity

C. Loss of sinkholes

D. Loss of wetlands

What is a multi-nation state and provide an example

Which of the following was a common way for slaves to rebel or resist their imprisonment while at sea? A. stealing life boats and rowing back to Africa B. bribing the European crew with money C. attacking other African slaves D. refusing to eat

What three ideas do scientists believe can be proved by studying Earth's history?

Are zebras white with black stripes or black with white stripes?

The larges lakes in the world are found in: Asia Europe North America South America

The Gibraltar connects what two bodies of water?

Estonia, Lithuania, Ukraine, Belarus, and Moldova once comprised Yugoslavia. True False

Where do most volcanos form A) In the ocean B) Over a hotspot C) At plate boundaries

Which of these is not an environmental effect of destroying wetlands A. loss of habitat B. increased air temperature C. poor absorption of rain water D. unfiltered water

Iron atoms combine with oxygen atoms to form rust. Is this a physical property of iron or a chemical property?