If all plants on earth died,how long will animals survive?

Question

If plants make oxygen and all animals take oxygen then how can more oxygen be made for us?

Answer 1

We would have to produce our own oxygen, probably through electrolysis of water.

By the way, 80% of our oxygen is made by algae. Trees are a distant 2nd.

Answer 2

We'd all die out pretty quickly. I'm not sure exactly how long but if you look at things like this: If the sun starts to drift away from Earth and eventually dies out, so the plants die within a few days, without oxygen(a portion of the air we breath) we and all the animals would die, thus creating a lifeless earth.

Answer 3

I would think not very long at all, because animals rely on oxygen exhaled by plants, just like they rely on CO2 exhaled by us. It is a symbiotic relationship and one without the other is pretty much doomed. Not to mention that plants are the the basis of the whole food chain. Without plants, the herbivores would die, and without herbivores, the carnivores would die.

I can't offer you a specific answer, but I would say within a couple weeks (if our bellies were affected) or within a day (if our respiration was affected), all animal life would die in the absence of plants.

Answer 4

They would all die of starvation too, probably before oxygen ran out. Without plants, I don't think there is another natural source of oxygen. Plants allow our planet to be habitable.

Answer 5

sky,

Even if people found a different way to produce oxygen, animals wouldn't last long, because the hebivores (vegetarian animals) would not have food and the carnivores wouldn't have the herbivores to eat, so all animals would be gone within a few months.

Answer 6

Plant more trees, especially in forests where there are already trees. Because the more trees there are in an area the more rain is produced and therefore more trees can thrive and grow. Like the Amazon Forest, a lot of rain falls there but i have read that areas the size of 12 football stadiums are cut down each day, to make way for humans

Answer 7

we and the animal would be gone long before all the plants had gone .Died of heat and thirst and hunger
where would the water come from to drink if there were no forests

Answer 8

plants will survive conditions that animals can't survive... you can figure the plants will outlive all other life on the planet.

So your question has no basis in reality.

Answer 9

what do you eat?