Re:Beluga whales adopt lost narwhal in St. Lawrence River
by Turing_Machine on Friday September 14, 2018 @08:45AM
(#17986773)
> Plenty of animals and plants alter their environment to the detriment of others.
Definite case in point: photosynthesizing organisms (green plants, algae, etc.)
We know that the Earth had a large-scale anaerobic ecosystem before the advent of photosynthesis. While anaerobic organisms still exist, they're only found in very narrow niches. >99% of them were wiped out, root and branch, apparently killed off by rising oxygen levels (oxygen is a poison to them).
Definite case in point: photosynthesizing organisms (green plants, algae, etc.)
We know that the Earth had a large-scale anaerobic ecosystem before the advent of photosynthesis. While anaerobic organisms still exist, they're only found in very narrow niches. >99% of them were wiped out, root and branch, apparently killed off by rising oxygen levels (oxygen is a poison to them).