there where confers not trees
Since the Mesozoic era, a lot of flowering plants have been dominated by trees and food bearing plants.
trees cactus pink poisonous flowers dinosaurs
Since dinosaurs died out, terrestrial fauna that was once reptile based has been replaced by a wide variety of mammals. Also, flowering plants are the dominant flora.
I am not sure I understand your question. However, while dinosaurs were alive for 160 million years, they did evolve and change a lot. Their descendants, the birds, have also evolved considerably since the extinction of the dinosaurs, and continue to do so even today.
No that would be an herbivore. Carnivores eat strictly meat.
Desertification causes the area to have a lack of rain since there is a lack of vegetation. This will change the climate to an arid state.
The vegetation does not change. Wolves are meat eaters so they don't eat the vegetation so their impact is close to zero.
Yes. This is mainly due to the sudden increase of vegetation during the Jurassic as well as the fact that the vegetation was getting much abundant, with more vegetation comes more oxygen. this sudden increase of vegetation allows herbivores of that time to grow in size (Eg. Protosauropods from the Triassic to Sauropods like Diplodicus and Brachiosaur in the Jurassic). With larger Herbivores comes in larger carnivores, the once abundant Ceratosaurus has been reduced due to competition with larger and more advance carnivore like Allosaurus. So yes Jurassic dinosaurs were indeed bigger and ADVANCE due to larger vegetation and increase in oxygen.
Biodiversity can change by mass distinction, natural disasters, hunting through humans and from their predators, Diseases, and etc. For example, existance of dinosaurs have changed since they are extinct. That proves that biodiversity has changed since dinosaurs no longer exist.
Dinosaurs are real,
Since the time of the dinosaurs, the temperature has cooled, and the earth has become more humid.
No dinosaurs are not still alive there are some relatives of dinosaurs that have been alive since dinosaurs like alligators and crocodiles even tigers and elephants.