Explanation:
Water vapour is important for a number of different reasons, but its presence in the atmosphere is one of the most important. Water vapour is present within the atmosphere in varying amounts but is a vital component of the hydrologic cycle. In the atmosphere, water vapour can exist in trace amounts or even make up as much as 4% of the atmosphere. This concentration depends largely on where the water vapour levels are measured. On average, the value of water vapour in the atmosphere is 2-3%. In arid or very cold locations - such as polar regions - the amount of water vapour in the air is much lower.[4]
Even on a clear day, water vapour exists in the atmosphere as an invisible gas - unlike clouds which are droplets of liquid water that can be seen. If the conditions are right, water vapour in the air can collect on small particles of dust, salt, or smoke in the air to form small droplets. These droplets gradually increase in size and over time become various forms of precipitation. Since water vapour is so prominent in the atmosphere and forms precipitation, water vapour is a major component of the hydrologic cycle. When water holding areas are heated by the Sun, some of the water being held evaporates and becomes vapour, powering the cycle.[5]
In addition to being created by evaporating water, plants are capable of producing water vapour through a process of transpiration.
Answer:
Asia and North-America
Explanation:
The Bering strait is a portion of about 47 miles (75 km) that separates Asia (Russia) and North-America (state of Alaska, USA). Let's remember that Alaska belonged to Russia and was bought by the US.
That straight is a place with very harsh and extremely violent weather fueled by cold Arctic water and winds.
20,000 years ago, that straight was solid ice and that's how human migrated from Asia to North America (and went further South afterwards).
Answer: Urban centers in Ethiopia are ridden by a variety of socio-economic issues such as illiteracy, unemployment, and especially poverty.
Explanation: They can also lack environmental management, lack of stability in infrastructure and buildings, as well as lack of investment in the local human population.
While there has been an increase in construction, the quality of construction itself has been poor as the government has felt pressure to rapidly build in order to meet demand and immediate needs. However this can mean very costly rehabilitation of the faulty construction in the future.
In addition, in urban Ethiopia, women out number men which has contributed to the poverty level as their main source of employment is agriculture.
Furthermore, many times there is only one main road within the urban centers which contributes to a lack of infrastructure and overcrowds the area.
Finally, there is also a lack of post secondary education and medical facilities.
The answer to your question would be d.aquifer Hope this helps:)
the world's current population is 7.3 billion and the world population in 1915 was 1.8 billion. The increase over the past century is 7.3 billion - 1.8 billion = 5.5 billion. So, the correct answer would be "more than 5 billion" (option D).
