Point Pollution - pollution that comes from a particular source, such as from a factory or sewage treatment plant. Nonpoint pollution, which doesn't come from a single, identifiable source, includes materials that wash off streets, lawns, farms and other surfaces. Renewable Resource - a resource that can be replaced through natural processes if it is not overused or contaminated. For example, water and trees are renewable resources. Nonrenewable resources are in limited supply and cannot be replenished by natural processes, at least not for thousands of years.
Fossil fuels are a nonrenewable resource.
The solid waste stream is the sum of all the solid waste that is continuously thrown away. Sustainable Development - development that uses resources in an efficient way and without destroying the basis of their productivity. For example, sustainable agricultural practices avoid the use of pesticides and chemical fertilizers that can pollute the soil and water. Toxic - a poisonous substance. All rights reserved.