Answer:
a longitudinal study
Explanation:
Hello! A longitudinal study is a type of research design that involves studying and evaluating the same group of people for an extended period of time. It is an extended case study and constitutes a purely qualitative task. By taking a long time, your program can cost a lot of money.
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Answer: 3
Explanation: Infants can be taught to swim because they have not yet learned to fear water. You learn to swim. Fear is not an instint either.
According to lecture, archaeologists might have to choose between saving everything vs. only saving diagnostic artifacts, which can be analyzed.
What is diagnostic artifact?
- Changing technology has created a vast number of artifacts that mark specific time periods in archeology. These are called diagnostic artifacts because they allow archeologists to pinpoint relatively specific time periods during which they were produced.
- Archeologists studying prehistoric cultures use stone and bone tools to understand technological changes and assign approximate dates to sites.
- Historical archeologists have found increasingly detailed ways to partition time on their sites.
- For example, archeologists can date a glass bottle based on attributes that demonstrate how it was made. A hand-blown wine bottle made of thick, olive green glass is much earlier than a machine-molded medicine bottle made of clear glass and embossed with the manufacturer's name and logo.
- Documented patterns in manufacturing technology allow archeologists to determine the absolute dates for most glass bottles, ceramics, nails and other artifacts found at historic sites.
To learn more about artifacts : brainly.com/question/17362933
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Answer:
correct option is D) Whistle only
Explanation:
solution
equipment for fog signals is Whistle only because according to rule 33 of Equipment for Sound Signals
as length 12 meter or more than 12 meter there need only a whistle
and when length is more than 20 meter than bell in addition required with whistle
and length 100 meter or more than gong is additional provided with bell and whistle
so here
correct option is D) Whistle only