Valuable ore deposits and gem crystals are often associated with a. oceans b. oil deposits c. thin crustal areas d. igneous intrusions

What causes the famous san francisco fog to move inland and back out to sea?

All of these sentences include commonly confused homophones. which sentence is correct? you put too much sugar on your breakfast serial. my father grows vegetables and flours in his garden. will someone me untie the knot in my shoelace? when did the captain set sale on his trip to north america?

Summarize the work of famous environmental scientists of the past.