Refraction represents a change in the direction of propagation when beams of light encounter a medium with a different density.
Reflection is the return of light to the medium it came from when it encounters a mirror.
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Answer: The system analyst is one of the most important members in any organisation. These system analyst has to analyse different data of the organisation which would help to bring out the different any new business policy changes or any kind of improvement.
Explanation:
An example to know this better would be the system analyst of a telecom company. Here the role of the system analyst would be bring out the design and implementation of new telecom information system and also should be aware of previous data of the organization. The system analyst would also be responsible to bring out the new business policies based on latest telecom standards and ensure the systems conforms to the latest standards.
Answer:
True
Explanation:
While I believe it's a compendium of the both(both true and false), I when asked to pick just one, I would go with yes. They're are lots of things we humans do on a general note that causes flooding. Although, heavy rainfall can also cause flooding and that's not as a result of human activity, but directly. But then, activities like not maintaining a dam, or erecting a structurally failed dam can cause flood to occur at any point in time, without warning even. Another way is when due to our activities, we block the rivers, this can also lead to flooding exactly like the case of heavy rainfall does. Lack of good drainage facilities, drainage wouldn't create itself, we as humans do. When we don't were essentially creating an excuse for an eventual happening of flood.
Succinctly put, human activities also cause floods, as much as natural events causes flood.
