Q1
What factors determine population growth rate?
ABirth rate, death rate, migration
BOnly birth rate
COnly death rate
DOnly migration
ICSEClass 10 (ICSE)BiologyCh 15 · Topic 1
Population - The Increasing Numbers and Rate of Growth
Human population growth has significant environmental and social impacts, understanding growth rate and factors influencing it is important.
Core concept
Population growth rate depends on birth rate, death rate, and migration, with rapid growth straining resources and infrastructure.
How it works
Exponential population growth occurs when resources are unlimited, but real populations face limiting factors like food, space, and disease.
Why it matters
Rapid population growth can lead to resource depletion, pollution, deforestation, and strain on social services like healthcare and education.
Key detail
Population control measures, like family planning and education, aim to manage growth rate for sustainable development and resource use.
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Quick notes
• Growth rate depends on birth rate, death rate, migration.
• Rapid growth strains resources and infrastructure.
• Exponential growth: with unlimited resources.
• Real populations face limiting factors.
• Limiting factors: food, space, disease.
• Rapid growth causes resource depletion, pollution.
• It also causes deforestation, service strain.
• Population control: family planning, education.