answer:
sedimentary rock is formed when rocks start to weather away causing them to loosen. **weathering is the breaking down of rocks, soils, minerals, and artificial materials through contact with water, atmospheric gases, and biological organisms.** sedimentary rocks are formed from older rocks. the pieces of broken rocks are then transported (through water.) and over time the layers will become compacted (salt crystals 'glue' the layers together.)
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The correct answer is A. Country chooses to produce bananas instead of wheat.
Opportunity cost is termed as value of choice. It is the important concept in economics and also the relationship which is between choice and scarcity.
A good example of opportunity cost is you can spend money and time on other things but you can not spend time reading books or the money in doing something which can help.
Opportunity takes important part in economic theory.
