Express the number apperaring in the following statements in standard form.
The earth has `1,353,000,000` cubic km of sea water.

Answer

To express the number 1,353,000,000 in standard form, we follow these steps:

### Step-by-Step Solution:

1. **Identify the number**: We start with the number 1,353,000,000.

2. **Locate the first significant digit**: The first significant digit in this number is '1'.

3. **Place the decimal point**: We place the decimal point after the first significant digit. This gives us 1.353.

4. **Count the number of places moved**: We need to count how many places we moved the decimal point to the left to reach the first significant digit. In this case, we moved the decimal point 9 places to the left (from 1,353,000,000 to 1.353).

5. **Express in power of 10**: Since we moved the decimal point 9 places to the left, we multiply by 10 raised to the power of 9. Therefore, we write it as:
\[ 1.353 \times 10^9 \]

6. **Include the unit**: Since the original number was in cubic kilometers, we write the final answer as:
\[ 1.353 \times 10^9 \text{ cubic kilometers} \]

### Final Answer:
The volume of sea water on Earth in standard form is:
\[ 1.353 \times 10^9 \text{ cubic kilometers} \]

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