The hydrologic cycle describes the continuous movement of water above, on, and below the surface of the Earth. The water on the Earth's surface--surface water--occurs as streams, lakes, and wetlands, as well as bays and oceans. Surface water also includes the solid forms of water-- snow and ice. The water below the surface of the Earth primarily is ground water, but it also includes soil water.
The hydrologic cycle commonly is portrayed by a very simplified diagram that shows only major transfers of water between continents and oceans, as in Figure 1. However, for understanding hydrologic processes and managing water resources, the hydrologic cycle needs to be viewed at a wide range of scales and as having a great deal of variability in time and space. Precipitation, which is the source of virtually all freshwater in the hydrologic cycle, falls nearly everywhere, but its distribution is highly variable. Similarly, evaporation and transpiration return water to the atmosphere nearly everywhere, but evaporation and transpiration rates vary considerably according to climatic conditions. As a result, much of the precipitation never reaches the oceans as surface and subsurface runoff before the water is returned to the atmosphere. The relative magnitudes of the individual components of the hydrologic cycle, such as evapotranspiration, may differ significantly even at small scales, as between an agricultural field and a nearby woodland.
Answer:
There are greater opportunities for trade in the pacific rim than in the steppes.
Explanation:
Trade is something that has been used by humankind for thousands of years. The reason is simple - it is the basis of any economic type, be it primitive, command, market, etc... Basically, through trade, the individuals, groups, countries, regions, get the goods they need in exchange for the goods they have to offer and are needed on the other side.
Not all places on Earth provide the same opportunities for trade though, and in most cases the reason for it is geography. The Pacific Rim, for example, is a huge region and there are countries on all levels of development. It is a region where infrastructure doesn't have much influence because trade goes through water, and even though it is a huge distance in question from one side to another, trade is very easy. On the other hand, we have the steppes. These areas are sparsely populated, are usually low on resources, the climate is harsh, which in turn makes the countries dominated by them are less developed, and that in turn means infrastructure in bad condition or fully lacking in most of the territory. Such conditions result in bad conditions for trade as the opportunities are much lower than in other regions.
Answer:
d. setting a goal to provide 80% of electricity from renewable resources by 2050
Explanation:
Germany takes an very good step towards the reduction of carbon dioxide.We know that carbon dioxide is a green house gas.The green house gases are increasing the temperature of the earth and this is known as global warming.So it become necessary to reduce the production of green house gases.
Germany government said that up to 2050 they will use the renewable energy source to produce power.
So the option d is correct.
d. setting a goal to provide 80% of electricity from renewable resources by 2050
The correct answers are:
- gas;
- petroleum;
These three North African countries do not have a big variety of natural resources, instead they only have very few, but it is the most valuable ones on the global market, the petroleum and the natural gas.
All three are very rich in these two resources, especially Libya, and they had a crucial role into the development and economic progress of these countries, by bringing them enormous trade revenue.
Change the pressure and/or the temperature of the gas.