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It really depends on what dinosuar.
Dilophosaurus was a man-sized dino. They were actually about the size of a large dog. Although, the gigantic and famous Tyrannosaurus Rex and Brachiosaurus were huge mostlikely because it had to find food at different places. So, yes, genetics played a big role in the size of dinos and evolution of the needs. So the Brachiosaurus could reach leaves off of high trees. But, like I said before, not ALL dinosaurs were big.
What else can I help you with?
Why where dinosaurs so big?
Why dinosaurs were so big is because in prehistoric times there was no winter. and dinosaurs are lizards and lizards never stop growing. so mixed with humidity and surplus of food the dinosaurs or lizards lived for hundreds of years and grow all that time.
Are there people living in dinosaur era?
No, unless you consider birds dinosaurs (some people do; dinosaurs and birds form a clade).Science says dinosaurs (of the sort normally meant by "dinosaurs", i.e. not birds) became extinct tens of millions of years ago; humans have been around for maybe a couple of millions of years tops, and that's if you're exceptionally generous with your definition of "human".Some creationists think dinosaurs must have coexisted with humans, but there's one big problem with this: the Bible doesn't mention dinosaurs, or anything like dinosaurs, hanging around in Genesis anywhere. Some people play games with the wording of the second sentence of Genesis and put dinosaurs in the time between "God created the heavens and the earth" and "The earth became without form and void." In this case they were still gone before humans arrived on the scene.
What caused the pockmarks on the moon?
When astroids hit the moon it causes pockmarks... also when the dinosaurs moved to the moon 222,000 years ago they made big poops.
What was the earth's atmosphere like?
The early chemistry of the atmosphere can be deduced by studying the oxygen, CO2, nitrogen etc that is chemically bound in the rocks.e.g. in the oxides, carbonates and so on. Another wee trick is that at different temperatures, the ratio of the isotopes of oxygen alters, so by measuring the 16O to the 18O, the temperature may be inferred.
Did the dinosaurs die off in the Triassic Period?
The "Age of Dinosaurs" came to an end with the extinction event at the end of the Cretaceous.
Why where dinosaurs so big?
Why dinosaurs were so big is because in prehistoric times there was no winter. and dinosaurs are lizards and lizards never stop growing. so mixed with humidity and surplus of food the dinosaurs or lizards lived for hundreds of years and grow all that time.
Why were woolly mammoths so tall?
Not all dinosaurs had large feet. Some dinosaurs were small and didn't have big feet.
How big where dinosaurs?
very big
Are dinosaurs giant lizards?
yes because dinosaurs are big
What is a stegosaur dinosaurs?
stegasaurs are dinosaurs with big spikes on their long tail. they are not as big as a tyrannosaurus but bigger than a valociraptor.
What really killed the dinosaurs?
some predict the the dinosaurs died of a big asteroid.
Does dinosaurs a kind of reptiles?
yes dinosaurs are a kind of reptiles they are big lizards
How big were the first dinosaurs?
The first dinosaurs evolved from fishes and were no bigger than these days crocodiles.
What 2 animals are big relations to dinosaurs?
2 animals that are related to dinosaurs are sharks and croodiles.
Are all dinosaurs at least as big as a horse?
No
What are the release dates for Valley of the Dinosaurs - 1974 The Big Toothache?
Valley of the Dinosaurs - 1974 The Big Toothache was released on: USA: 14 December 1974
Are hens dinosaurs?
Yes (WITH A BIG MAYBE ATTACHED) The difference between certain therapod dinosaurs and birds is very small. Every feature we use to describe birds (beak, feathers, wings) first evolved on dinosaurs. In fact the morphology between birds and the raptor family of therapod dinosaurs is so similar many scientists to call birds avian dinosaurs.
