Answer:
Explanation:
Building and business closures for weeks or months reduce water usage, potentially leading to stagnant
water inside building plumbing. This water can become unsafe to drink or otherwise use for domestic or
commercial purposes. For example, optimal growth conditions for undesirable pathogens, such as
Legionella bacteria, can occur when hot water temperatures decrease and disinfectant residuals (e.g.,
chlorine) drop to low levels. Water chemistry changes may also increase corrosion and leaching of
metals, including lead, and may cause the formation of disinfection by-products. Turning on the water
for immediate use after it has been stagnant can pose a risk to public health if not properly managed.
Additionally, turning on water after a prolonged period of non-use could disrupt pipe and plumbing
scales to such an extent that microbial and chemical contaminants could be released into the water.
EPA recommends that building owners and manage
if a business is trying to sell a piece of land in that area, and wants it assessed
The answer are: mountains are formed, crust become molten rock and denser plates slides under lighter plates.
Let's look into the options one by one:
Crust is formed.
-This is in correct.
-At the ocean trench, plates subducts and were destroyed. No process of construction occurs as it is located at a destructive plate boundary.
Mountains are formed.
- This is correct.
- As it is located in the destructive plate bondary, two plates collide and create compressional force. The lighter continential will be compressed and foldes up to form fold mountains. One of the examples is the Rocky Mountain.
Seafloor spreading occurs.
-This is incorrect.
- Seafloor spreading occurs at constructive plate boundaries, however ocean trench occurs at destructive plate boudary and thus seafloor spreading does not take place.
Crust becomes molten rock.
- This is correct.
- When ocean trench is formed, denser oceanic plate subducts under the less dense continental plate and meets the hot magma. The crust material will then melt under high temperature and become molten rock.
Denser plates slide under lighter plates.
- This is correct.
- At deep ocean trenches, denser oceanic plate slide under the lighter continential plate as it is located the destructive plate boundary.
It might not be on time, but I hope it helps explain the question. :)
The average annual precipitation in these cities are:
Vancouver - 1457 mm
Edmonton - 456
Regina - 390
Toronto - 831
Halifax - 1468
Explanation:
Canada is enormous country, and of course it has large differences when it comes to the precipitation levels across its territory. In general, the closer a region is to the sea, the more precipitation it tends to get, to further a region is in the interior, the lower the precipitation. The exceptions of these rules are the areas in the interior that are around the Great Lakes, and the far north.
The Great Lakes are several enormous lakes which create a lot of humidity in the air, so despite being in the interior, the amount of precipitation is relatively good. The northern part of the country, despite being surrounded by sea, has very low precipitation levels, with the main reason being the polar climate.
This patterns can easily be seen by the five cities on the list. Vancouver and Halifax are located on places that are heavily influenced by the sea, so they have high precipitation levels. Toronto is right next to the Great Lakes and it has medium precipitation levels. Regina and Edmonton are located in the interior, far away from the wet air masses, thus they have relatively low precipitation levels.
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