Question

C. Define (any 2)
1. Sublimation.
2. Abiotic substance.
3. Hinge Joint.

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Answer 1

Answer:

1)Sublimation is the transition of a substance directly from the solid to the gas state, without passing through the liquid state. 

2) any fundamental chemical element or compound in the environment.

Explanation:

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Answer 2

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Abiotic Substance is a substance that does not falls under nature , For eg. Plastic , Polythene etc.

$\huge\mathfrak\blue{Option\:3}$

Hinge joint is a type of joint which is found in the hinges of the fingers of our legs.