Test: Food (Our Basic Need) - 2 - Grade 4 MCQ

ORS should not be stored more than 12 hours.

Mosquitoes spread malaria. When a mosquito bites an infected person, a small amount of blood is taken in which contains microscopic malaria parasites.

• Standing water is the number one breeding spot for mosquitoes.
• Mosquitoes breed by laying eggs in stagnant water.

• Kerosene when sprayed on stagnant water forms a layer and prevents air from entering the water.
• Due to the lack of air larvae of mosquitoes get killed and prevent the breeding of mosquitoes.

• Loss of excess water and salts from the body is called dehydration.
• Dehydration can be mild or severe. You can usually treat mild dehydration at home.

Garbage should be disposed by throwing it into covered pits.

Pieces of brick and sand are put at the base of the soakage pit to make the base porous.

The solid waste produced in our houses is called garbage.

House flies are strongly suspected of transmitting at least 65 diseases to humans, including typhoid fever, dysentery, cholera, poliomyelitis, yaws, anthrax, tularemia, leprosy, and tuberculosis.

Animal dung and other decaying matter can be used to prepare or produce biogas.