Standard Science Primary 4 Cycles

Why is it most effective to remove stagnant water to prevent the spread of dengue fever?

A It kills the adult mosquitoes.
B It prevents the adult mosquitoes from resting.
C It makes the larvae grow faster into adults.
D It breaks the life cycle by preventing eggs from being laid.
Show Worked Solution

Worked Solution

Step 1: Mosquitoes lay eggs in stagnant water. Step 2: Removing water removes the breeding site. Step 3: This prevents the first stage of the life cycle from starting.

Correct answer: It breaks the life cycle by preventing eggs from being laid.

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free