Question

1) name some life forms for which oxygen is necessary?
2) name a form of oxygen which can be poisinous for the living organisms?
3)define photosynthesis

Answer 1

1) Trees and Human beings
2) Carbon monoxide and Nitrogen dioxide
3) The process of manufacturing of food in the plants with the help of sunlight, moisture, Air, and soil.


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Answer 2

Heya,

1) Lifeforms for which oxygen is necessary is almost all the living organisms need oxygen for the survival. Some are Humans, plant, Animals, etc.

2) The form of Oxygen which is poisonous for the living organisms is Ozone (O3) it can harm the organism but as it is formed in the upper layer of atmosphere so it doesn't harm the organism.

3) Photosynthesis is a process by which green plants convert light energy captured from the sun into chemical energy with the help of chlorophyll pigment, water and oxygen.

Hope this helps....:)