What will happen if all the animals in the world die?

Answer 1

if all animals would die out, then people would have 2 choices.

1. become vegetarians

2. eat each other for meat.

personally i don't want to eat my own kind so i would become a vegetarian.

Humans are animals too though so if you meant humans included than everything will die out eventually because plants need carbon dioxide which is produced by respiration in animals and humans.

Answer 2

Humans would likely become extinct, too. Wild forests and grasslands would disappear because there would no more animal decomposers and pollinators. Climate change and rainfall would accelerate to unheard-of levels. Starvation would lead to widespread disease.

Answer 3

If all the animals go extinct, then we will have to rely on only plants.