According to sources, the data gathering for this type of research can make use of archival data. Some photographs are taken few years ago and can be compared to the present condition.Thank you for your question. Please don't hesitate to ask in Brainly your queries.
The correct answer should be because they want to establish a sense of time passing by and things changing over the course of time. Each new era is influenced by the previous one so the way time passes is important because as time passes by things change and the historians monitor it and record it in a chronological order.
Answer:
A landform being broken apart is WEATHERING.
A glacier forming from an accumulation of ice and snow is DEPOSITION
Explanation:
This is because weathering is the process where rocks or landforms are broken down into smaller pieces sometimes form soul through the activity of an agent which could be wind, water, ice, gravity e.t.c.
While Deposition is the accumulation of segments of particles in a new location forming another shape after it has been wash away(erosion) into that new location by water, ice, wind, gravity e.t.c.
If a filter in a fish tank creates a steam of flowing water near the edge it might overflow
A control group is different because it is not what is being tested. for example the control group would use sugar pills while the other group uses the pills being tested
