Question

which of the following factors affect population size? check all that apply.
birth rate
death rate
immigration
emigration
disease
competition and predation
human activity
natural disasters and occurrences
done

Explanation:

• Birth rate adds new individuals, increasing population size.
• Death rate removes individuals, decreasing population size.
• Immigration brings in new individuals from outside, increasing population size.
• Emigration removes individuals who leave, decreasing population size.
• Disease increases death rate, reducing population size.
• Competition and predation raise mortality and limit survival/reproduction, affecting population size.
• Human activity (e.g., habitat destruction, hunting) alters survival, reproduction, and movement, changing population size.
• Natural disasters cause sudden, large-scale loss of individuals, reducing population size.

Answer:

• birth rate
• death rate
• immigration
• emigration
• disease
• competition and predation
• human activity
• natural disasters and occurrences