Question

francine is developing a model of the carbon cycle, which involves the movement of carbon among various earth systems. she begins by drawing the diagram shown below.her friend byron evaluates the model, and suggests that she thicken the arrow leading from fossil fuels to the atmosphere. his reasoning is that fossil fuels are being burned at a much faster rate than natural processes are restoring them.how does francine's model show the effect of photosynthesis and cellular respiration on earth systems?

Answer 1

In Francine's model, the arrow pointing from the "Plants" box to the "Atmosphere" box is the process of photosynthesis, in which plants absorb carbon dioxide from the atmosphere and use energy from sunlight to convert it into organic matter (such as sugars).

Arrows pointing from the 'Plants' box to the 'Animals' box represent the process of cellular respiration in which animals ingest plants and other organic matter as food and release carbon dioxide into the atmosphere through respiration.

Overall, Francine's model shows that the carbon cycle involves the movement of carbon between the atmosphere, plants, animals, and the surface of the Earth (such as soil and rocks).

Photosynthesis and cellular respiration play an important role in this cycle as they help move carbon between these different Earth systems.

In particular, photosynthesis helps remove carbon dioxide from the atmosphere and store it in organic matter, whereas cellular respiration releases carbon dioxide into the atmosphere.

Read more about the carbon cycle at:

brainly.com/question/19559175

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