Yes - they have barely changed from their prehistoric ancestors.
There were no cities millions of years ago.
The water cycle
Alligators and crocodiles are both large, aquatic reptiles that belong to the same order, Crocodylia. They have similar physical characteristics, such as long bodies, powerful tails, and sharp teeth for hunting prey. Additionally, they are both apex predators in their respective habitats and have been around for millions of years.
Given that matter can neither be created nor destroyed, it follows that there are the same number of iron atoms now as there ever were.
Technically, no. Crocodiles are bigger.
Carbon is a building block of all life and is an element that naturally occurs on this planet. There is the same volume of carbon on the planet today as their was millions of years ago.
the atoms have a cycyle
No.
Prehistoric crocodile, no. But besides size, modern-day crocodilians (crocodiles and alligators) are almost the same.
no
no. fishes are classified as Pisces and crocodiles are classified as reptiles
Considering that crocodiles have been around since before the dinosaurs (255 million years ago for crocodiles vs. 230 million years ago for dinosaurs) in just about the same form as they are at present, there is little difference.