soil pollution
the contamination of soil by harmful substances
soil pollution
the top layer of earth where plants grow
topsoil
a large body of saltwater that covers most of our earth
ocean
a raised part of the earths surface that is higher than the surrounding land
hill
chemicals used to kill insects and pests that can pollute the soil when overused
pesticides
the part of soil made from dead plants and animals that make it fertile
humus
a smaller body of water partly enclosed by land
sea
a large flat area with a little change in elevation
plain
waste material from factories that can damage the soil when dumped improperly
industrial waste
the process of breaking down rocks into smaller pieces to form soil
weathering
a natural flowing body of freshwater that move toward a ocean,sea,or lake
river
a low area of land between hills or mountains,often with a river
valley
the process where toxic substances remain in the soil for a long time and does not easily break down
soil contamination persistence
the layer of soil beneath the topsoil that contains less nutrients but more minerals
subsoil
a large body of water surrounded by land
lake
a landform with steep sides and a peak,usually higher than a hill
mountain
a farming method that avoids synthetic chemicals that help reduce soil pollution while improving soil health
organic farming
the mixture of minerals,organic matter,air,and water that supports plants life
soil
a narrow strip of water that connects two larger bodies of water
strait
a deep,narrow valley with steep sides often formed by river erosion over time
canyon