Scientists have found out many thing about dinosaurs by studying what?

Question

Scientists have found out many thing about dinausaurs by studying what?

a. living animals

b. early cave drawings

c. fossil remains

d. early writings

Little bit of explanation would be appreciated

Answer 1

they use carbon dating.

Answer 2

Dinosaurs lived millions of years ago, so the teeth and bones paleontologists find are almost the only direct physical evidence we have to help us learn about them (because their soft body parts decayed or were destroyed so long ago). The teeth and bones are called fossil remains, and they survive for millions of years because they are very hard.

Answer 3

Fossil remains--no one has seen a live dino before since humans and dinos never coexisted, so there wouldn't be early cave drawings or writings of them.  Living animals can be compared to them, but we need to see the fossils in order to have something to compare them to.

Answer 4

a. living animals

-By comparing the fossils we have found of past life to what we currently see, we can make connections and assumptions concerning diet, behavior and habitat. For example: By looking that the fossils of pteradons, we can compare them to modern day condors in terms of build, and bone structure. In doing so, we can determine that pteradons likely lived in small colonies and on cliff sides where it would be easier for them to take flight.

b. early cave drawings

-No cave drawings contain dinosaurs, but they do contain other prehistoric animals such as the Giant Ground Sloth and Bison. By studying the drawings, we can compare where we find the fossils, the the background they are put in with the art. Thus, we learn a little about what these animals were like, and where they lived.

c. fossil remains

-Fossil remains alone cannot tell us much. By dating the fossils, and comparing the structure to known creatures today, we can learn much. Simple things, such as tooth structure can tell us the diet of said fossilized dino. Leg bones can tell us if the creature was a sprinter, or a slow mover. The number of bones from different dinos in an area can tell us whether they were social or solitary.

d. early writings

-Again, early writings, like cave drawings, won't tell us about dinos, but they can tell us about animals that are now extinct, such as the Great Auk, among others. We can learn by what others observed about these animals.

Well, I hope I answered your question as directly as possible! I could write more, but then I'd just be writing a book. ^_~ good luck!

Answer 5

c - fossil remains

There were no humans during the time of the dinosaurs, so cave drawings and writings are impossible!  Living animals are not a source; it was decided only a few years ago that modern-day birds are descendants of dinos, and that took a lot of fossils and impressions of fossils to decide.

Scientists learn about dinosaurs mostly by studying the bones, and some times they have gotten lucky and found imprints of the body in places where mud became solid and impressions survived 65 million years.  From studying bones, scientists figure out the size and general shape of the animal, and from studying marks on the bones they can figure out that other animals attacked (left tooth marks).

Answer 6

By both A and C. Fossils obviously have an important role in understanding Dinosaur morphology. However, comparing dinosaurs to living animals allow scientists to learn how they moved, and behaved.