It's believed there was lower oxygen and much higher levels of CO2 when dino's roamed the Earth. Evidence can be found by tapping the ancient atmosphere trapped in amber. We also know there was more volcanic activity which lead to a thicker atmosphere and warmer climate. Edit: The mass of the Earth hasn't changed in 4.5 billion years.
Or...was there less planetary mass ergo less surface gravity at the time, and after the meteor strike which wiped them out, the additional mass increased gravity, changing current calculations what's allowable?
In exacting terms, yes the earth's total mass increases over time due to material aggregation. The Mars impactors tend to suggest that is what happens. Yet, the fraction by which the planetary mass increases in this manner is probably way, way too low to make a significant difference to earth's surface gravity at every point. Atmospheric content is by far the more malleable variable to account for a given epoch in which some species dominated over the planet as a whole.
Oh boy, another one of these silly threads I just have to stay out of before I start calling everyone major dips!
At least people here are asking questions. That's how we learn. Compared to most of the country who are to busy watching reality TV to give a rats @ss about the real world they live in.
Oh boy, another one of these silly threads I just have to stay out of before I start calling everyone major dips!
At least people here are asking questions. That's how we learn. Compared to most of the country who are to busy watching reality TV to give a rats @ss about the real world they live in.
You don't learn by asking stupid questions, though I haven't followed this thread enough to know whether what's being argued here is really "Were the dinosaurs as large as their fossil skeletons would indicate?" The answer is, of course, they were -- the skeletons don't lie.
Now something as large as Godzilla, or a gorilla-like creature as large as KING KONG -- yeah, that's impossible.
Oh boy, another one of these silly threads I just have to stay out of before I start calling everyone major dips!
At least people here are asking questions. That's how we learn. Compared to most of the country who are to busy watching reality TV to give a rats @ss about the real world they live in.
You don't learn by asking stupid questions.
There are no stupid questions. (Well most of the time.)
Hey Rory, what about the talkin' doll at the Forbidden Zone archaeological site from Planet Of The Apes?
It doesn't make sense . . . a planet where apes evolved from men? Blah, blah, blah!
Hey, don't anyone accuse me of not being honest.... that doll in the movie version WAS STUPID (and the novel version wasn't much better) because it was made of plastic and cloth and was supposed to have survived intact in the dirt for two thousand years?!!! and still have a working mechanism for saying "Momma!?" Ridiculous, but then, POTA is not scientifically plausible at all.
Now some nerd come out of the woodwork here and tell me that POTA could happen. This I gotta hear -- but why am I still in this thread?!!!!!
Hey Rory, what about the talkin' doll at the Forbidden Zone archaeological site from Planet Of The Apes?
It doesn't make sense . . . a planet where apes evolved from men? Blah, blah, blah!
Hey, don't anyone accuse me of not being honest.... that doll in the movie version WAS STUPID (and the novel version wasn't much better) because it was made of plastic and cloth and was supposed to have survived intact in the dirt for two thousand years?!!! and still have a working mechanism for saying "Momma!?" Ridiculous, but then, POTA is not scientifically plausible at all.
Now some nerd come out of the woodwork here and tell me that POTA could happen. This I gotta hear -- but why am I still in this thread?!!!!!
We share 98% of the DNA with the chimp. If humans died out and we gave evolution a chance, yes POTA's could happen under the right circumstances. Not likely but possible.
