Question

Q5. Do as directed.

1) Why should oils and fats be not released in the drain?

2) There is no waste in a forest. Explain



3) Identify the word. Why this word in written as on the

vehicle?

4) Why do we often sneeze when we inhale a lot of dust-laden air?

5) It is necessary to excrete waste products. Give reason.​

Answer 1

Answer:

word. Why this word in written as on the

vehicle?

4 do we often sneeze when we inhale a lot of dust-laden air

5) It is necessary to excrete

Answer 2

Answer:

1.) Oils n fats r not released in the drain because oil is not dissolved in water and it floats on water.It can clog the drains and can affect aquatic life if released in the water body.

2.) When the plants & animals die in forest,this is considered as waste.When they die the microorganisms present in the soil helps 2 convert the waste into Humus or nutrients for soil which in turn used by plants. And therefore forest doesn't contain any waste materials.

4.) Why do we often sneeze when we inhale a lot of dust-laden air to expel out these foreign particles.These particles get past the hair in the nasal cavity n irritate the lining of cavity which triggers a message 2 the brain.This is the method to remove the unwanted dust particles from nostrils.

5.) When our cells perform their functions, certain waste products are released. These are toxic for our body and hence need to be removed from the body. If they are not removed, they can cause certain problems in our body and can even cause some diseases.

Explanation:

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