What are the key concepts and examples related to natural and manmade disasters?

Here are the answers to your questions:

10. c) Using a variety of channels like radio, social media, and mobile apps is an effective mode of communication because it ensures broad reach and caters to different audience preferences.

11. b) Natural is a type of disaster, referring to events caused by natural processes.

12. b) A natural disaster is best described as a harmful impact after a natural hazard event. It's when a natural hazard (like an earthquake or flood) causes significant damage and loss.

13. c) An earthquake is an example of a natural hazard event, as it originates from natural geological processes.

14. b) Floods primarily cause property damage and loss of life due to the destructive force of water.

15. b) Tsunamis are most commonly caused by large-scale displacement of ocean water, typically by underwater earthquakes or volcanic eruptions.

16. b) A manmade disaster is defined as an event caused by human activities, such as industrial accidents or technological failures.

17. c) An industrial accident is an example of a manmade disaster, as it results from human error or activity within an industrial setting.

18. c) A hybrid disaster is a disaster resulting from both natural and human-caused events, where human actions exacerbate or trigger a natural hazard.

19. b) Silting of river beds reduces the capacity of rivers to hold water, making them more likely to overflow and cause floods, especially during heavy rainfall.