by EPadmin | Nov 30, 2019 | Geography
ENVIRONMENT, ECOLOGY AND ECOSYSTEMS Our planet is the only place in the universe that supports life. Life on Earth requires a variety of organic and inorganic nutrients. These nutrients continuously recycle through the interactions of organisms and their environments....
by EPadmin | Nov 30, 2019 | Geography
ATMOSPHERE AND SOLAR RADIATION The Earth is surrounded by an atmosphere. It is a blanket of gases and has no definite outer edge. It gradually becomes thinner and it merges into space. Over 80% of atmospheric gases are held by gravity within 20 kilometres of the...
by EPadmin | Nov 30, 2019 | Geography
HYDROSPHERE AND OCEAN CURRENTS All the Earth’s water is found in Oceans, streams, lakes, the soil, groundwater and in the air. The largest store of water is in the oceans, which contain over 97% of the Earth’s water. Ice caps that cover Antarctica and glaciers that...
by EPadmin | Nov 30, 2019 | Geography
LITHOSPHERE AND TECTONIC PLATES Scientists believe the Earth began its life about 4.6 billion years ago. The continents probably began forming about 4.2 billion years ago as the Earth continued to cool. It was not until the turn of the 20th century that scientists...
by EPadmin | Nov 30, 2019 | Geography
EARTH AND UNIVERSE In the Solar System, our Earth is a unique planet because of the life forms that exist on its surface. Attempts to separate natural and anthropogenically induced variability in the Earth System have proved to be successful in many respects. our...
