What are the solutions to the problems on Newton's Laws of Motion and the life cycle of a mosquito?

$$F = 1.5 \text{ kg} \times 5 \text{ m/s}^2$$ $$F = 7.5 \text{ N}$$

The magnitude of the force applied is $\boxed{7.5 \text{ N}}$.

1. (b) Life Cycle of a Mosquito

i. The stages labelled are:
I: Eggs
II: Larva
III: Pupa
IV: Adult

ii. Stage II (larva) breathes in water by extending a siphon or breathing tube to the water surface to take in atmospheric oxygen.

iii. The organism does not feed at stage III (Pupa).

iv. The stages that are strictly aquatic are I (Eggs), II (Larva), and III (Pupa).

v. Stage IV (adult female mosquito) feeds on blood to enable it to produce stage I (eggs).

vi. Four impacts of female Anopheles mosquitoes on humans are:

• Transmission of malaria.
• Causes itching and skin irritation from bites.
• Can lead to secondary bacterial infections from scratching.
• Causes discomfort and sleep disturbance.