Question

Q. Why do food remains fresh when
kept in the refrigerator?
Q2 Is oxygen necessary for the
survival of all living organisms
Q3 why do you think docotor ask to
wear mask to prevent the spread
of corona virus

Answer 1

Explanation:

1.because of Cooling fresh air inside

2.no

3.because it will enter through our nose n mouth

Answer 2

Answer:

I hope these answers are correct.

Explanation:

Q1. The fundamental reason for having a refrigerator is to keep food cold. Cold temperatures help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacteria (which all food contains) so that it takes longer for the bacteria to spoil the food.

Q2. Animals including humans need oxygen to live. We breathe in oxygen and breathe out Carbon Dioxide. There are also air pockets in soils and water that help tiny living things survive in water and beneath the soils. For example, fishes absorb Oxygen from the water with their gills. All animals are adapted with special organs and parts that help them absorb the oxygen they need from the air.

Q3. Reasons we support the use of face masks:

1. The highly contagious nature of the virus

2. The potential for asymptomatic and pre-symptomatic transmission

3. Empiric evidence from Asia, where masks are routinely used