Give reasons :(a) Aquatic animals and plants are able to survive in ma

1.	Give reasons :(a) Aquatic animals and plants are able to survive in matter. (b) A burning candle stops burning if covered with a glass tumbler. (c) Mountaineers and divers carry oxygen cylinders with them. (d) When water is heated, we see bubbles rising up.
Answer» (a) Aquatic animals and plants use oxygen dissolved in water and survive. (b) Oxygen is necessary for combustion when covered with a glass tumbler supply of oxygen stops. (c) For artificial respiration mountaineers carry oxygen cylinders as at high altitudes, the air is thin and breathing becomes difficult. Also divers carry oxygen cylinder for artificial respiration as there is less oxygen dissolved in water (less dense) and breathing becomes difficult. (d) These bubbles come from the air dissolved in water. The marine life uses air dissolved in water.

Give reasons :(a) Aquatic animals and plants are able to survive in matter. (b) A burning candle stops burning if covered with a glass tumbler. (c) Mountaineers and divers carry oxygen cylinders with them. (d) When water is heated, we see bubbles rising up.

Answer»

(a) Aquatic animals and plants use oxygen dissolved in water and survive.

(b) Oxygen is necessary for combustion when covered with a glass tumbler supply of oxygen stops.

(c) For artificial respiration mountaineers carry oxygen cylinders as at high altitudes, the air is thin and breathing becomes difficult. Also divers carry oxygen cylinder for artificial respiration as there is less oxygen dissolved in water (less dense) and breathing becomes difficult.

(d) These bubbles come from the air dissolved in water. The marine life uses air dissolved in water.

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