I have always wondered about this when ever I see pictures of them on TV.
2006-11-01 15:51:17 · 8 answers · asked by Geronimo 1 in Science & Mathematics ➔ Zoology
Natural selection. Since competition was low, and food was so abundant...the bigger the better. Also, if you were bigger you could kill smaller things or defend yourself from something that wanted to eat you. Mammals were favored to remain small during that time because competition would have been too high with all the huge dinosaurs around. After they died out, mammals had a free world to investigate, and some of them got very large as a result. (Mammoth, Mastadon, Rhinocerous, Giant Ground Sloth, etc.) It's all about evolution.
2006-11-01 16:55:13 · answer #1 · answered by Shaun 4 · 2⤊ 0⤋
Ah! I know the answer to this. Check drdino.com out, then go to downloads/videos or smth, there are 4 seminars there, i forgot which one.
His theory is this, at their time, everything on earth was huge. From plants to animals. This is because of higher air pressure at the time, higher levels of oxygen. A few researches have been conducted to test this and they all prove it right. Such as oversized tomatoes and fishes when raised in higher pressure and higher oxygen concentration.
A little warning tho, that website is about creationism.
Oh yes, thats why there were giants too at the time. Weve uncovered big human bones..
2006-11-01 21:52:56 · answer #2 · answered by jon 2 · 0⤊ 0⤋
Life forms always adapt to the environment. smaller life forms could not have existed at the time of the Dinoaurs. The Earth ot today, is no where near what it was billions of years ago. The heat, Humidity and
traps that would engulf smaller life forms were in existence at the time we are talking about. Even the Dinosaurs fell victim to the tar pits and other forms of traps that resulted in their death.
2006-11-01 15:55:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
How about a dumb answer. The dinosaurs took their Flintstone vitamins.
2006-11-01 15:56:44 · answer #4 · answered by READER 1 5 · 0⤊ 0⤋
Genetics?
2006-11-01 15:53:47 · answer #5 · answered by kmodek 2 · 0⤊ 0⤋
why are mice so small? Its just how big they grow, i don't know how to explain it but its just the way they were suppose to be.
2006-11-01 15:53:48 · answer #6 · answered by Anonymous 3 · 0⤊ 0⤋
They took Mass XXX to bulk up.
2006-11-01 16:00:20 · answer #7 · answered by Jay S 5 · 0⤊ 0⤋
big lunches
2006-11-01 17:29:56 · answer #8 · answered by Daddy 6 · 0⤊ 0⤋