Environment

Question 1

Consequences of global warming on environment (8)

Answer 1

• ice caps melt
• sea levels rise
• loss of habitat
• extinctions
• coral bleaching
• spread of disease
• climate change

Question 2

Define biodiversity

Answer 2

• variation shown by organisms in an ecosystem
• number of species
• number of each species

Question 3

How to reduce climate change (7)

Answer 3

• use renewable energy
• use less fossil fuels
• use public transport
• prevent deforestation
• fewer cattle
• less rice farming
• less CFC / methane

Question 4

Effect of nitrous oxide on global warming

Answer 4

• nitrous oxide is a greenhouse gas…
• which traps heat in the atmosphere
• increasing / causing global warming

Question 5

Effect of deforestation

Answer 5

• loss of biodiversity:
• as loss of habitats
• extinction / migration of species
• soil erosion:
• no tree roots to hold soil…
• so soil is washed away
• leaching of minerals:
• rain removes nutrients (minerals) from soil…
• infertile land
• more CO2 in atmosphere:
• less trees
• less photosynthesis
• less CO2 removed
• burning trees also releases CO2
• contributing to global warming
• climate change:
• more greenhouse gases
• enhanced greenhouse effect