The process of converting atmospheric nitrogen into ammonia by microorganisms is called: MCQ with Answer and Explanation

Explanation:
Charles Darwin proposed the theory of evolution by natural selection, emphasizing that organisms with favorable variations are more likely to survive and reproduce. Hugo de Vries, a Dutch botanist, proposed the mutation theory of evolution based on his work on evening primrose, stating that evolution occurs through sudden, large mutations (saltations). Jean-Baptiste Lamarck proposed the theory of inheritance of acquired characters, based on the use and disuse of organs (e.g., giraffe's neck). All statements are correct.

Explanation:
Charles Darwin proposed the theory of evolution by natural selection, where organisms with favorable traits survive and reproduce. Homologous organs share a common structural plan and evolutionary origin, indicating divergent evolution from a common ancestor. Evolution does not lead to perfection; it only results in adaptation to the current environment. Thus, statements 1 and 3 are correct.

Explanation:
About 70% of CO₂ is transported as bicarbonate (HCO₃⁻) ions in plasma. CO₂ reacts with water in RBCs, catalyzed by carbonic anhydrase, to form carbonic acid, which dissociates into H⁺ and HCO₃⁻. The rest is bound to hemoglobin or dissolved. Bicarbonate is the major transport form.