Question

the carbon cycle describes the movement of carbon between living things, the atmosphere, the oceans, and earths crust. select the true statements. the total amount of carbon on earth does not change significantly from year to year. photosynthesis takes more co₂ out of the atmosphere than any other process. the ocean absorbs more co₂ from the atmosphere than it releases. the burning of fossil fuels is a carbon sink.

Explanation:

1. For "The total amount of carbon on Earth does not change significantly from year to year": The carbon cycle is a closed system on Earth (carbon is recycled, not created or destroyed in large amounts annually), so this is true.
2. For "Photosynthesis takes more CO₂ out of the atmosphere than any other process": Ocean absorption of CO₂ is often a larger sink than photosynthesis, so this is false (but the checkmark here is incorrect).
3. For "The ocean absorbs more CO₂ from the atmosphere than it releases": Over time, the ocean does absorb more CO₂ (acting as a sink), so this can be true.
4. For "The burning of fossil fuels is a carbon sink": Burning fossil fuels releases CO₂ (a source, not a sink), so this is false (checkmark is incorrect).

But focusing on the true ones: The first statement is true (carbon is cycled, total amount stable yearly), and the third can be true (ocean as a net CO₂ absorber). However, the initial checked "Photosynthesis" and "Burning fossil fuels" are incorrect. The correct true statements are "The total amount of carbon on Earth does not change significantly from year to year" and "The ocean absorbs more CO₂ from the atmosphere than it releases" (depending on context, but the first is definitely true).

Answer:

The true statements (correct ones among the options, considering accurate carbon cycle knowledge):

• The total amount of carbon on Earth does not change significantly from year to year.
• The ocean absorbs more CO₂ from the atmosphere than it releases.

(Note: The checked "Photosynthesis" and "Burning of fossil fuels" are incorrect. Photosynthesis is a sink but not the largest, and burning fossil fuels is a source, not a sink.)