Waec 2025 Biology Question 3

Practice essay / theory question 3 from the 2025 Waec Biology examination. This question covers General .

Waec 2025 Biology Essay / Theory

Topic: General

Question 3 WAEC • 2025 • BIOLOGY • essay

( a )

Explain briefly how carbon (IV) oxide and oxygen are balanced in nature.

( b )

List five factors that affect the distribution of plants in their habitats.

( c )

i) What is overcrowding in an ecosystem?

( c )

ii) List five effects of overcrowding in an ecosystem.

( d )

i) Distinguish between density-dependent factors in an ecosystem.

( d )

ii) Give two examples of density-dependent factors.

( d )

iii) Explain briefly how density-dependent factors and density-independent factors affect the dynamic equilibrium in an ecosystem.

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This is Waec 2025 Biology Question 3. It is one of the essay questions from the 2025 Waec Biology examination.

The question covers General .

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