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Learning Outcomes  👉 What is biodiversity  👉 Origin of biodiversity  👉 Nature of biodiversity  👉 Interrelationships of organisms  👉 How to measure biodiversity  👉 Biodiversity of Bangladesh  👉 Risks and remedies of biodiversity  What is Biodiversity? The term biodiversity describes the great variety of life on Earth. Biodiversity refers to the variety of living things, including plants, animals, and microorganisms. We don't know for sure exactly how many different organisms there are on Earth. However, scientists estimate that there are about 8-14 million (80 to 140 lakh) different species of organisms on this Earth. Some believe that the number is higher. But whatever the number, most of these organisms are unknown to us. Only 1.2 million (12 lakh) species have been identified and described so far, most of which are insects. This means that billions of other organisms are still mysterious and unknown to us. Origin of Biodiversity The unique characteristics of all sp

What is photosynthesis?

What is photosynthesis?

Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy from the sun into chemical energy stored in the form of organic compounds, such as glucose. This process involves the use of light energy, water, and carbon dioxide to produce oxygen and carbohydrates.

In plants, photosynthesis takes place in specialized organelles called chloroplasts, which contain chlorophyll, the pigment that gives plants their green color. Chlorophyll absorbs light energy from the sun, which is used to convert carbon dioxide and water into glucose and oxygen. The overall chemical equation for photosynthesis is:

6CO2 + 6H2O + light energy → C6H12O6 + 6O2

This process is essential for life on Earth, as it provides the basis for the food chain and is responsible for producing the oxygen we breathe. Additionally, photosynthesis plays an important role in regulating the Earth's climate by removing carbon dioxide from the atmosphere and releasing oxygen as a byproduct.


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