Answer: The answer is C). Nitrates
Explanation: Animal wastes and nitrogen-containing fertilizers are used to grow plants and they contain nitrates. Nitrogen exists naturally in soils, typically bound to organic matter and mineral soil material. When these fertilizers are used, they increase the concentration of nitrates in the environment, especially in the soil.
Answer:
The correct answer is - the direction of the points of the V shapes on contour lines.
The contour lines can tell us a lot about the shape of the relief structures on the maps, and of the things that we can also see is the path of the rivers. When the rivers are running through a steeper part, practically their upstream, because they manage to cut and shape the relief structures around them, the contour lines take up a specific V shape. The points of the V are always on the river itself, and they point to the direction from where it is coming from, thus following the points of the V shape can bring us very easily to the upstream of the river.
Answer: B. the 20th Amendment, setting January 20 as inauguration day for the president
Explanation: The 20th Amendment, also called the Lame Duck Amendment, decreased the amount of time between the presidential election and the inaugration of the new president. This was made because of advances in technology with faster travel and communication.
Answer:
Explanation:
Of the five oceans, the one with the greatest average depth is the Pacific, with about 4300 meters.
The reason is that this ocean is located on the great plate of the Pacific whose convergent margins are crossed by deep oceanic trenches under which this plate subducts.
In fact, the greatest ocean depth is also found in this ocean and corresponds to the Challenger Abyss, in the Mariana Trench, which reaches a depth of 11 km.
A. Physical properties are used to describe matter.
Physical characteristics include color, shape, and mass, among other descriptors. Chemical properties describe how matter changes its chemical composition. Since chemical changes cause the matter to have a different identity, the physical properties describe the type of matter.
