Answer:
c.100
Explanation:
The distance between scale markings on the horizontal scale is 100 km. Comparison of the vertical and horizontal scales indicates that the horizontal scale distance between tic marks is __<u>100</u>_ times that of the vertical scale.
Answer:
Explanation:
5. The earth’s surface from the edge of the continent to the deep of the ocean
Continental shelf
The continental shelf is a part of the seafloor. This is closest portion of the seafloor to the land.
6. The rock portion of the earth’s surface
lithosphere
The lithosphere is made up of the crust and upper part of the mantle. Most of the rocks on earth are found in the lithosphere. Below the lithosphere is the asthenosphere
7. The part of the earth where plants and animals live
biosphere
The region of earth where all life forms can be found is the biosphere.
8. A fracture in the earth’s crust
Faults
A fault is a fracture within the earth's crust. It is formed as a result of brittle deformation of the earth.
9. Underground water-bearing layers of porous rock, sand or gravel
Aquifer
An aquifer is a porous and permeable formation within the earth that bears ground water.
10. To remove the salt from ocean water or groundwater
Desalination
In areas where the only source of water is ocean water, desalination is important because the saltiness of the water can be removed by this process.
The correct answer is - d. colder and denser.
The main differences between the surface currents and deeper currents are the temperature and density, and that actually decides their position in the water, on the surface, or deeper.
The surface currents are warmer, and because they are warmer the molecules are much more loose, so the density is lower, which in return makes it easier, thus it is in the surface.
The deeper currents are colder, and because they are colder the molecules are much closer and more concentrated, so the density is higher, which means that they are heavier, thus fall deeper below the easier currents.
The answers are:
- air pollution; the bigger cities create lots of dust, there's always new building sites that contribute to dust and some of the working materials to pollute the air. Also there's big amount of vehicles that release toxic gases, as well as the industry.
- housing shortages; the more people there are at some city, the more difficult it is to have space for everyone, because usually the process of building new homes doesn't correspond with the amount of people coming in.
- overcrowding; the larger the population at some place, the more crowded it gets, be it in traffic, walking, in stores, institutions...
- water pollution; more people means more pollutants in the water they are using, which in return creates water shortages because big portion of the water can not be used afterwards.
- water shortages; the amount of fresh water is limited, so once the population surpases the optimal number problems with fresh water start to occur. To this also contributes the irresponsible usage of water.
