Question

use your understanding of the nitrogen cycle to answer the questions provided.
the nitrogen cycle could not exist without bacteria.
put the steps of the carbon cycle in order using step 1 as your starting point.
step 1: bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form.
the animal dies and decomposes, returning nitrogen back to the soil.
once nitrogen is in usable form, it is taken up by plants and assimilated into proteins.
an animal eats a plant and the nitrogen becomes part of the animals proteins.

Explanation:

Analyze the starting point

The prompt asks to order the steps of the cycle starting with Step 1. Note that while the prompt text contains a typo ("carbon cycle"), the actual steps and context clearly describe the Nitrogen Cycle Steps.
Step 1 is given: "Bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form."

Determine the next step (Step 2)

Once nitrogen is converted into a usable form by Nitrogen Fixing Bacteria, it must enter the food web. Plants absorb this inorganic nitrogen from the soil.
Therefore, the next logical step is: "Once nitrogen is in usable form, it is taken up by plants and assimilated into proteins." This represents Step 2.

Determine the subsequent step (Step 3)

After plants assimilate the nitrogen into organic molecules (proteins), consumers must acquire it. Animals obtain nitrogen by consuming plants.
Therefore, the next step is: "An animal eats a plant and the nitrogen becomes part of the animal's proteins." This represents Step 3.

Determine the final step (Step 4)

When the consumer dies, decomposers break down the organic matter and return the nitrogen to the soil as inorganic compounds, completing this portion of the cycle.
Therefore, the final step is: "The animal dies and decomposes, returning nitrogen back to the soil." This represents Step 4.

Answer:

Put the steps of the nitrogen cycle in order using Step 1 as your starting point.

Step 1: Bacteria, through nitrogen fixation and nitrification, convert nitrogen into a usable form.

• <blank>Step 4</blank> The animal dies and decomposes, returning nitrogen back to the soil.
• <blank>Step 2</blank> Once nitrogen is in usable form, it is taken up by plants and assimilated into proteins.
• <blank>Step 3</blank> An animal eats a plant and the nitrogen becomes part of the animal's proteins.