What types of foundations are not good when building in an area that is likely to experience earthquakes?

bedrock
soft clay
hard clay
wet and sandy soil

Solve i need this for an important assignment!

Compounds which are found naturally in the earth are called: a. ores b. composites c. rocks d.minerals

What is the difference between emigrate and immigrate? ?

Can someone me choose a broad topic and area of focus i am really doing this as a tally to see which one most people pick ok water pollution global warming endangered species atmosphere for the !