Human Population (Leaving Cert Biology): Flashcards
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Practise the cards
12 cards from this deck
Effect of famine on population
Effect of famine on population
Reduces population numbers
Effect of disease on population
Effect of disease on population
Reduces population numbers
Effect of war on population
Effect of war on population
Reduces numbers (may be temporary)
Birth rates after war
Birth rates after war
Often increase
Baby boom
Baby boom
Increased births after war as societies recover
Effect of contraception on population growth
Effect of contraception on population growth
Reduces population growth
How contraception works
How contraception works
Prevents fertilisation and pregnancy
Effect of vaccination on population
Effect of vaccination on population
Increases population numbers
Effect of improved surgery on population
Effect of improved surgery on population
Increases population numbers
Improved sanitation definition
Improved sanitation definition
Better hygiene & waste mgmt reducing disease spread
Effect of antibiotics on population
Effect of antibiotics on population
Increases population numbers
What insecticides do
What insecticides do
Kill harmful insects on crops, leading to higher yields