Stuff Blows Up far more easily for starters.
How high is "high?" Earth's atmosphere is about 20% oxygen. However, high pressure oxygen is toxic
.
edited 1st May '11 11:50:58 AM by Yej
The Speculative Documentary Blue Moon
is set on such a world.
Also, the Prehistoric Park
episode Bug Hose
.
Insect - like creatures that are resistant to the negative effects of high oxygen could grow to large sizes, but forest fires would be so common land vegetation would have to be highly adapted to survive.
edited 1st May '11 4:10:34 PM by FrodoGoofballCoTV
A planet with lots of oxygen would probably have a big concentration of plant life, as plants release oxygen in their process of photosynthesis, all that oxygen has to come from somewhere.
Given the large amount of vegetation and oxygen, wildfires would take on catastrophic levels, so smart settlers would probably move away from the forests to avoid such disasters from harming them (and to prevent the mosntruous forest dragonflies from eating them)
Correct me if I am wrong but more oxygen would mean more Ozone and more ozone woul mean less radiation to the surface.
edited 2nd May '11 10:38:43 AM by heartlessmushroom
You could have one that does that though. A Land-Barnicle or something.
Also, to support the plant matter, there would also have to be more carbon dioxide. Earth's Percenatage of C.D would be 5% or something if I remember, so about 10% maybe?
Also, I think the plants would be much like many plants in my native Death World of Australia. They would be relying on the fires to produce fresh soil, and having seeds that germinante only after the seedpods have been burnt.
I think there were other adaptaions too. Look it up.
edited 7th May '11 9:11:16 PM by doorhandle

Other than allowing Big Creepy-Crawlies, what else might pop up in such a world?
Would a Giant Enemy Crab be able to exist, or does the higher oxygen level not effect their blood's in-efficient oxygen carrying methods?
edited 1st May '11 11:48:31 AM by deuxhero