Which of the following is true about the carbon cycle? Question 17 options:

a. the amount of carbon within the Earth's system is always changing

b. long-term storage of carbon takes place in plants

c. the balance of carbon and oxygen within the Earth's system is always changing

d. the amount of carbon within the Earth's system always stays the same

B

Explanation:

This is because plant take in carbon Dioxide and give oxygen in the carbon oxygen circle

a axis of a graph is a color or shade so we can all go outside and have a party so we can eat   some grilled cheese sammiches and broccoli and have some ugly fun times

i don't know why i put this, i know its not the i was just bored : p

delete this answer while you can

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.