Soil formation involves both

a. decaying and erosion of rocks

b. decomposition and crystallization of rocks

c. chemical weathering and erosion of rocks

d. physical and chemical weathering of rocks

Preston's clock produces 45 useful energy units for every 100 units of electricity used. What is the efficiency of the clock? 0.45 percent 45 percent 55 percent 100 percent

Costa Rica borders with which two countries?

What does Einstein's theory of relativity explain?

What is the approximate longitude of the most easterly boundary of the united states

The Economic and political union known as the European Union was established in 1993. Question 2 options: True False

How many offers were made ro the palestinians to create their own átate

Where is mt. kilimanjaro?

The primary purpose of Bretton woods conference was to

What was the World Trade Organization decision in 2006 related to genetically modified crops? Individual countries had the right to determine if they were going to allow genetically modified crops to come into their country.

12 out of 50 seventh graders said they would be willing to pay between $21-$30 dollars for a class trip. If there are 350 students in seventh grade, about how many would go oh the trip if it cost $30?