Read the Passage and answer the questions

Conservation technology is a growing field, and right up in the forefront are drones, or unmanned aerial vehicles, which are either operated by a remote controller or programmed to fly unaided. Drones have had a long history of use in the military and by large tech companies in mapping roadways, and their applications in conservation and ecology are growing.

Drones have various uses in wildlife conservation and monitoring, especially given the smaller sizes and more-affordable costs associated with this technology in modern times. Examples include using drones for elephant population monitoring and in measuring forest biodiversity. They are also widely used in monitoring illegal activities such as poaching or deforestation. Kaziranga National Park was the first protected area in India to utilize drones in targeting rhino-poachers.

UAVs are a so used to track wildfires and their spread, playing a role in disaster mitigation. Recent applications include the use of drones in pest management, where pesticides are loaded into drones for spraying large swaths of cropland, as seen during the locust swarm.

Drones can help counter issues related to safety of manned aerial surveys since there is no pilot involved and they can be flown into remote locations which might otherwise be inaccessibile. In the event of a crash scenario, their smaller sizes are likely to cause less damage which means ground staff who operate them do not face the risk of injury.