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2.Ferns belong to the division pteridophyta. ... Ferns are economically important plants as they are used for ornamental purposes. Some of the ornamental ferns are the sword fern- Nephrolepis, the holly fern - Cyrtomium, the leatherleaf fern - Rumohra.

3.Disaster Management can be defined as the organization and management of resources and responsibilities for dealing with all humanitarian aspects of emergencies, in particular, preparedness, response and recovery in order to lessen the impact of disasters.

3.Answer: The various devices used in information, communication are Computer/laptop, Mobile phones, TV sets, Radio and so on. These devices enable easy dissemination of information in the scientific field.