The discipline which would be responsible for collecting data about currents and tides is oceanography. It is a study of all the changes and aspects of the ocean. It analyses, collects and monitors information that refers to the dynamic of all the natural processes that take place in the ocean, including ocean currents, waves, and geophysical processes.
The measurements taken by Jay are least likely to contain random errors.
When you increase the number of measurements, the random errors tend to minimize, because errors in one direction cancel with errors in the opposed direction.
Observation
An observation is information that is collected by using one of your 5 senses
Answer:
Option D, Personal habits, such as hand washing, have greatly reduced contamination from bacteria.
Explanation:
Diseases like typhoid and cholera became pandemic a century ago because people at that time were not aware of the general hygiene and its impact on killing microbes.
Majority of human diseases are caused by either bacteria or virus only when they ingest into the internal body system. The entry of microbes can be restricted by adopting healthy hygiene habits such as washing hands regularly with disinfectants, washing vegetable properly before cooking etc.
Such habits break the chain of contamination and hence prevent the disease from spreading.
Thus, option D is correct
I think B. Scientific research
