Answer:
Chain surveying is the type of surveying in which only linear measurements are made in the field. The main principle of chain surveying or chain triangulation is to provide a framework consist of a number of well-conditioned triangles or nearly equilateral triangles. It is used to find the area of the field.
Explanation:
Three seismic stations are needed to determine the location of an earthquake's epicenter.
You see how much the scale is, let's say that it is 150 mm=300 miles. If it goes over, you can measure it with a ruler, or move with your hands, measuring it as well as possible and estimating. Hope this helps! :)
Answer:
How do glaciers affect animals?
Their melting water flows into the soil which affects vegetation which acts as food for animals at lower altitudes, some of which are prey for other animals and so on. ... As glaciers melt large deposits of sediment are deposited in valleys below. This affects the local land and rivers and their existing ecosystems.
