Here is an essay on the carbon cycle. Carbon is an essential element that can be cycled from inorganic to organic form. It is present in nature as inorganic CO2 and in living and dead organisms as various organic matters. The cyclic conversion is maintained between inorganic and organic form (Fig. 2.33). CO2 becomes available in nature by microbial decomposition [...]
In this essay we will discuss about Cockroach. After reading this essay you will learn about: 1. Habitat and Habits of Cockroach 2. Morphology of Cockroach 3. Anatomy 4. Endoskeleton 5. Digestive System 6. Digestive Glands 7. Heart 8. Respiratory System 9. Mechanism of Respiration 10. Excretory System 11. Nervous System 12. Endocrine System 13. Sense Organs 14. Compound Eyes [...]
In this essay we will discuss about Earthworm. After reading this essay you will learn about: 1. Habitat and Habits of Earthworm 2. Morphology of Earthworm 3. Anatomy 4. Digestive System 5. Digestive Glands 6. Blood Vascular System 7. Hearts and Anterior Loops 8. Excretory System 9. Nervous System 10. Receptors or Sense Organs 11. Reproductive System 12. Copulation and [...]