Question

write two reasons why life on earth would not be possible without photosynthesis by​

Answer 1

Answer:

Photosynthesis is important for the existence of life on this earth . In the absence of photosynthesis , would not be possible on earth . This is due to the following reasons.

i) Photosynthesis by plants provides food to animals (including human being ) . So , the survival of animals including human beings depend on the food made by plants by photosynthesis . In the absence of photosynthesis , there would be no plants on the earth and hence no animals will survive.

ii) The process of photosynthesis by plants put oxygen gas into the air . It is this oxygen gas which the animals use for breathing and respiration. 

So, due to this all reasons life is impossible on the earth in the absence of photosynthesis.

Explanation:

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Answer 2

Answer:

Write two reasons why life on earth would not be possible without photosynthesis.

Explanation:

Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar. The main and primary function of photosynthesis is to convert solar energy into chemical energy and then store that chemical energy for future use. Photosynthesis was discovered by Jan Ingenhousz.

• From above we conclude that plants require light that is plants do photosynthesis process. In absence of photosynthesis there would be no plants on the earth and which means no animals too.
• The survival of almost all the living things, directly or indirectly depends upon the food made which is made by plants.
• oxygen and food both are necessary for living things to exist.
• Photosynthesis is responsible for producing oxygen, without which humans and animals cannot survive.
• Photosynthesis converts the sun's energy into accessible energy that humans and animals consume in form of food.

Thus we can say that life would be impossible on the earth in the absence of photosynthesis.