Question

If we never saw or heard dinosaurs how do we know how they look or sound like I mean how did we just create their noise??​

Answer 1

Answer.

Clues in dinosaur skulls have lead scientists to believe that these animals did make noises. ... Some, like "Lambeosaurus," had crests on top of their heads that probably filled with air when the animal breathed. As air was pushed through these crests, they likely made a deep bellowing sound similar to a horn.

Answer 2

Answer:

Biogas is an eco-friendly fuel because it helps to reduce the greenhouse gas emissions and our dependency on fossil fuels. It is produced from decomposition of organic matter, thus is an effective way of disposal of organic waste