Cosmozoic theory was proposed by

Options

A. Oparin
B. Richter
C. Arrhenius
D. Pasteur

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks who proposed the Cosmozoic theory. It is essential to know the key figures associated with this theory.

2. **Identifying the Cosmozoic Theory**: The Cosmozoic theory is also known as the theory of panspermia. This theory suggests that life on Earth originated from microorganisms or biochemical compounds from outer space.

3. **Key Details of the Theory**: According to the Cosmozoic theory, life reached Earth from other heavenly bodies, such as meteoroids, in the form of highly resistant spores of some organisms.

4. **Historical Context**: The Cosmozoic theory was proposed by a scientist named Richter in the year 1865. This is a crucial detail as it directly answers the question.

5. **Support for the Theory**: Although Richter proposed the theory, it was later supported by Arrhenius in 1908. However, the theory did not gain much traction and was ultimately discarded due to a lack of evidence.

6. **Final Answer**: Based on the information gathered, the Cosmozoic theory was proposed by Richter.

**Conclusion**: The answer to the question is option B, Richter.

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