Question
What do you understand by the term “transformation of energy”? Explain with an example.
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What do you rnean by hygroscopic water and combined water in the soil? Are these available to plants?
What is human immune system? What is a vaccine? How immunisation can be achieved?
Give four general characters of phylum Mollusca. Write down two examples.
Describe importance of water for the living organisms.
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Differentiate between humification and mineralization.