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An alternate CO(2) fixation mechanism wa...

An alternate `CO_(2)` fixation mechanism was of found in some tropical species of grass family by Hatch and Slack, who were from

A

England

B

Australia

C

America

D

New zealand.

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**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks about the origin of the scientists Hatch and Slack, who discovered an alternate CO₂ fixation mechanism in certain tropical grasses. 2. **Identifying the Mechanism**: The mechanism referred to is the C4 pathway, which is a method of carbon fixation in plants. This pathway is particularly efficient in hot and dry environments. 3. **Recognizing the Discoverers**: The C4 pathway was named after the scientists Hatch and Slack, who were instrumental in identifying this mechanism. 4. **Determining Their Origin**: The question specifically asks for the country from which Hatch and Slack hailed. According to biological literature, both scientists are from Australia. 5. **Selecting the Correct Answer**: Based on the information gathered, the correct answer to the question is that Hatch and Slack were from Australia. **Final Answer**: The scientists Hatch and Slack were from Australia. ---
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