There are many dangers faced by plant but the most dangerous are -
1.air pollution.
and these both things are because of human activities .

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I) Predators like herbivorous animals,
ii) Intensive felling of trees for commercial and other purposes,
iii) Soil erosion,
iv) Disasters (man made and natural)
the plants face lots of dangerous things like:
air pollution, deforestration,predators like herbivores animals,and lots others .so we have to stop all this and start giving new lif efor the plant. remember this plants give us oxygen and without oxygen we cannot stay at list 5s .so plants are very important thing like gold and diamonds so stop talking and start planting