And hurry no wrong answers . where are gemstones found? give examples.

It is important to distinguish where gems are formed from where they are found. 

Almost all gems are formed below the Earth's surface. 

image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.