A sand dune is a hill of sand, as the name suggests.
Answer:
Hence the information at disposal was incomplete.
Explanation:
The absence of a flight data recorder led the investigators to call off the investigation. It is often concluded that the investigation was called off because:- the information at disposal was incomplete. The flight data recorder is a crucial instrument that receives information from the sensors located in several parts of the plane and provides essential information associated with aircraft accidents.
Barriers keep markets from entering the market freely.
Answer: the international astronomical union downgraded the status of pluto to that of a dwarf planet because it did not meet the three criteria the IAU uses to define a full sized planet
Teachers adjusting their level of support and guidance to the level of skill of the student is known as scaffolding.
This idea of scaffolding is based on the idea that all students have different strengths and weaknesses in the classroom setting. Some students may need very little teacher help in a certain subject. Other students may struggle tremendously. This technique of scaffolding allows all students to receive the support necessary to have success in the classroom.