Considering May's global estimates, how many of the total species have been recorded?

Options

A. 1 percent
B. 22 percent
C. 10 percent
D. 50 percent

Explanation

To solve the question regarding how many of the total species have been recorded according to May's global estimates, we can follow these steps:

### Step 1: Understand the Total Species Estimate
Robert May estimated that there are approximately **7 million species** on Earth.

### Step 2: Calculate the Recorded Species
We need to find out what percentage of these 7 million species have been recorded. According to the information provided, **22%** of the total species have been recorded.

### Step 3: Calculate the Number of Recorded Species
To find the actual number of recorded species, we can use the following formula:
\[ \text{Number of Recorded Species} = \text{Total Species} \times \left( \frac{\text{Percentage Recorded}}{100} \right) \]
Substituting the values:
\[ \text{Number of Recorded Species} = 7,000,000 \times \left( \frac{22}{100} \right) \]
\[ \text{Number of Recorded Species} = 7,000,000 \times 0.22 \]
\[ \text{Number of Recorded Species} = 1,540,000 \]

### Step 4: Conclusion
Thus, according to May's global estimates, **22% of the total species**, which amounts to **1,540,000 species**, have been recorded.

### Final Answer
The answer to the question is **22% of the total species have been recorded**.

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