population and pollution Flashcards
name 3 fossil fuels?
coal, gas and oil
name a mineral resource?
limestone
what is limestone used for?
building
what is aluminium ore mined to make?
foil, drink cans and takeaway trays
what are the 3 main pollutants?
household rubbish, sewage and fossil fuels
what does a higher carbon dioxide level mean?
an increase in global warming
what has increased carbon dioxide levels the most?
burning fossil fuels
what does an increase in global warming mean?
our world is getting warmer which increases the hotness of the sea
what does our ozone layer do?
protect us from harmful UV rays from the sun
what has depleted our ozone layer?
an increasing use of aerosols and CFC’S from car exhausts
what effect does UV rays have on us?
increasing chance of skin cancer
what produces sulphur dioxide and what effect does it have on us?
produced when fossil fuels are burned. It reacts with rainwater and causes acid rain
what is exponential growth?
the ever increasing rate of world population
what are consequences of exponential growth?
the worlds finite resources are being used up quicker, meaning an increase in the production of greenhouse gases
what does a carbon footprint measure?
the total greenhouse gas given off by a person or organisation, in a given time
