16. Do plants and animals help each other in the exchange of gases in the atmosphere?
imalai to pynlain the difference between changes that can or cannot be reversed
Answers
Answer:
Examples of reversible and irreversible changes are given below:
Reversible change Irreversible change
1. Inflating a balloon: Balloon regains its original shape after evacuating. 1. Bursting of balloon: Balloon cannot get back into its original shape.
2. Making ice from water: We can get water back by melting the ice. 2. Making curd from milk: Milk cannot be obtained back once curd is formed.
3. Folding the paper: We can get back the paper in its original shape and size after unfolding it. 3. Cutting the paper: We cannot get back the original paper from its pieces.
4. Glowing of electric bulb: Once the bulb is switched off, it again becomes dark as before. 4. Burning of candle: It gives heat and light which cannot give back the original candle again.
Answer:
Yes Plants and animals help each other in the exchange of gases in the atmosphere.
Explanation:
Animals, during respiration, take in oxygen and release carbon dioxide gas. Plants, on the other hand, utilize this carbon dioxide gas in the process of photosynthesis to produce food and release oxygen in the atmosphere. Thus, we can say that plants and animals help each other in exchange of gases in the atmosphere.
Answer:
Given:
Explanation:
Melting of ice is a reversible change. Water can be turned into ice by keeping it in the freezer. When ice cubes are kept at room temperature, they turn into water after some time. On the other hand, burning of a piece of paper is an irreversible change. When a piece of paper is burnt, it turns into ash. The ash cannot be turned back into paper. Hence, it is an irreversible change.
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