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1. What is adaptation?
 
a. To withstand the  conditions of the environment present in the , organisms develop  features.
 
b. A feature or part of an organism that enables it to exist under the conditions present in the habitat is called .
 
2. What are the challenges faced by hydrophytes in their habitat?
 
a. The availability of water is  than what they need. The hydrophytes are subject to  that can damage the body or parts of the plant.
 
b. Hydrophytes .