Question

in night why should we not sleep under a tree

Answer 1

Because,at night, the process of photosynthesis does not occur and hence, the plants release carbon dioxide at night instead of oxygen due to the absence of sunlight. Hope it will help you!!

Answer 2

Because at night tree releases the carbon dioxide in more quantity.
The more quantity of carbon dioxide in the air can suffocate us.
And sometimes results in the death.
Hence ,it is said that we must not sleep under a tree at Night.
Hope it helps u!