It wouldn't but very likely the ecosystems wherever they thrived would be destroyed.
People will be long gone before seaweed are, my friend.
What would happen next if sagebrush is disappeared frrom a desert?
You would die.
You would die.
if the oxygen
Everything would die
There would be no bees to pollenate the flowers.
This cannot possibly happen, so asking what would happen if it did happen is an exercise in stupidity.
life would follow
first the animals that eat the seasweed would die or find alternative food sources than their predators would do the same and all the creatures who depend on seaweed as well.other under sea plants would get the seasweeds resources since there would be less competition.
Explain what would happen if a piece of seaweed from the ocean was placed in a fresh water aquarium?
They're populatioon would grow rapidly
know one knows. because we would all be frozen.