Technology and society.

CONTENTS:

Technology and society.

Environmental impact.

Pollution.

Environmental policies.

Depletion of resources.

Municipal solid waste.

Technology,society and the environment: humans use technology as a tool.

Technology and the enviroment.

Pollution and waste: substances that can be harmful to living organisms into the environment

Depletion of energy resources: due to extensive,growing use of non-renowable fossil fuels.

Disapearence of plant and animal species and habiats: the rainforest,this can have very serious repercussions.

The environment impact: of techonology depends on the percentage of population with a ccess to the technology.

Pollution and waste.

Natural pollutants and pollutants produced by human activity.

Primary pollutants and secondary pollutants.

Air pollutants, water pollutants and land pollutants.

Air pollution: causes, pollutants and effects.

Water pollution: causes, pollutants and effects.

Land pollution: causes, pollutants and effects.

Municipal solid waste (MSW)

Landfille site: is mainly generated by households.

Different containers for waste: for recycling.

Depletion of resources and environmental policies:

Energy resources are going to run out, and the fuels we use cause environmental problems. We therefore need to use clean renewable energies.

Alternative energy sources.

Biofuels: obtained from organic waste.

Bioethanol: extracted from sugar cane.

Biodiesel: extracted from used oil.

Biogas: extracted the power plants.

Nuclear fusion energy: which generates less radioactive pollution.

Fuel cell: which converts cheminal energy into electrical energy.

Environmental policies.

Fiscal policies.

Incentives and subsidies.

Policies promoting organic farming.

Sustainable development: is development that meets the needs of people in the present without compromising the ability of future generations to meet theirs.

Silvia Guijarro and Aitana Rivas.