Aquifer - A type of rock that can store water or transfer it to another place. c Arid - A very dry environment. Back Colony - A territory or country that is controlled by another country. Back Confluence - The point at which a tributary meets the main river. Back Convectional Rain - A type of rainfall that is common in equatorial areas, caused by warm air (heated by the sun) rising, cooling, condensing and bringing heavy rainshowers. Back Drainage Basin - The area of land drained by a river and its tributaries. Back GNP - Gross National Product, the total value of all the goods and services produced by a country in a year. Back Groundwater - The water that flows through soil and rocks. It is formed as water soaks into the soil, and it can be stored there. Back Honeypot - A place that attracts large numbers of visitors, like bees to a honeypot! Back Independence - When a colony gains the right to control its own affairs. Back Microclimate - The climate of a small area and how its surrounding environment affects temperature, humidity, etc. Back Monsoon - An Arabic word that means 'season'. It refers to the winds that blow across South Asia from the south-west in the summer and from the north-east in the winter, bringing lots of rain with them. Back Nomadic - People who move from place to place to find work, food, or water and fresh grass for their animals. Back Primary Rainforest - Rainforest that has been undisturbed by human activity. Back Subsidy - Money provided by the government to keep the price of a good or service low. Back Sustainable Development - "Development which meets the needs of the present without compromising the ability of future generations to meet their own needs".The Bruntland Commission's definition. Back Water Harvesting - Ways of capturing and saving water. Back Water Table - The level below which all the rock and soil is saturated with water. Back