Which is true of saturn's satellite, titan?
o
a. it is the smallest of saturn's satellites.
o
b. its surface temperature is comparable to the surface
of earth.
o
c. it used to be classified as a planet.
o
d. its atmosphere contains nitrogen.
apex

D. Titan's atmosphere contains nitrogen.

Explanation:

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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.