Tag: what is around us?

Urbanization is a process where population shifts from rural to urban areas. Urban areas become large as people begin to live and work in increasing numbers. Ruralization is an act of becoming rural. A region getting the appearance, features of rural area and the movement of people to country side. Communalization refers to abolition of private ownership of property, resources and share the collective resources among the local community for the common good. Hence, option A is the correct answer.   

The greenhouse effect is not a term associated with the interrelationship of different cultural ties and political movements over the world. It is a term associated with pollution.

Air pollution leads to the greenhouse effects due to the constant emission of poisonous gases from vehicles, households and industries which the atmosphere cannot use. Gases remain trapped inside the atmosphere causing the global temperature to rise. This is called global warming. This has resulted in holes in the ozone layer due to which harmful rays of the sun are allowed to enter the earth's atmosphere causing skin cancer and various other ailments. 

The amount of water vapor in the air is known as humidity. It can make hot temperatures even more unbearable than they already are. It affects both weather as well as climate. It also affects global climate change. Both low humidity as well as high humidity is harmful for us. Humidity is of two types:- Absolute humidity and Relative humidity.

The process by which water continually changes its form and circulates between oceans, atmosphere and land is known as water cycle. In the water cycle, water from oceans, lakes, swamps, rivers, plants can turn into water vapour. Water vapour condenses into millions of tiny droplets that form clouds. Clouds lose their water as rain or snow, which is called precipitation. Precipitation is either absorbed into the ground or runs off into rivers. Plants take up the water that was absorbed into the ground. Plants lose water from their surfaces as vapour that goes back into the atmosphere. Water that runs off into rivers flows into ponds, lakes, or oceans where it evaporates back into the atmosphere. This cycle continues.

Vernal pools, also called vernal ponds or ephemeral pools, are seasonal pools of water that provide habitat for distinctive plants and animals. 

A  vernal pool basin will experience inundation from rain/precipitation, followed by desiccation from evapotranspiration. These conditions are commonly associated with a Mediterranean climate. Most pools are dry for at least part of the year and fill with the winter rains, spring snowmelts, and rising water tables. Some pools may remain at least partially filled with water over the course of a year or more, but all vernal pools dry up periodically.

The state of atmosphere over an area at any point of time is known as weather. It is the state of the atmosphere over short periods of time. Weather can change from hour to hour, day to day, month to month or even year to year.

Following are the major elements of weather: -

1. Temperature
2. Pressure
3. Humidity
4. Precipitation
5. Wind