In all likelihood, probably. The water cycle would make sure that all the water on the Earth would be used, evaporated, and then sent down into the Earth over time. The amounts of water may have changed slightly over time, but the relative amount of water hasn't changed much at all, just the water placement and it's distribution.
The inner planets do not have a significant amount of water on their surfaces. Earth is the only inner planet with substantial water, covering about 70% of its surface.
Earth is the planet that contains the most abundant amount of water, with about 71% of its surface covered in water. Other planets in our solar system, such as Mars and Venus, have negligible amounts of surface water in comparison.
liquid
because earth is the only planet which has water,75% of the earth is water but now i think they found out a new planet which also has water in it.
There are exactly the same amount of water droplets on planet earth as there was when the dinosaurs roamed the planet. The hydrological perpetuation of the water cycle has just as many droplets as it did when the earth was formed by God. In theory, no water has ever escaped the confines of the planet except for the jettison of water in to outer space by the astronauts by accident or by design. Water evaporates, condenses as it cools and returns to the earth via the hydro cycle. hope this gives you the answer you were looking for
According to most scientists, we have had virtually the same amount of water on Earth since the planet formed. That would mean that there was the same amount of water on Earth when the dinosaurs existed. However, it is important to note that there is probably an infinitesimal amount more water now then there was in the time of the dinosaurs, simply because of the fact that there have been meteors/meteorites that carried a little bit of water to Earth since the dinosaurs died out.
Earth
2/3 is coverd by water
The inner planets do not have a significant amount of water on their surfaces. Earth is the only inner planet with substantial water, covering about 70% of its surface.
The Earth is sometimes called the "Blue Planet" or "Water Planet" because it is the only known planet that has large amounts of liquid water. Water bridges the gap to life, so water makes it possible for the Earth to support life.
Earth is the planet that contains the most abundant amount of water, with about 71% of its surface covered in water. Other planets in our solar system, such as Mars and Venus, have negligible amounts of surface water in comparison.
Europa and Titan have more water than is found on Earth.
liquid
Increase Due to melting polar caps
The amount of water on Earth remains relatively constant because of the water cycle. Water is continually cycling through processes like evaporation, condensation, and precipitation, which maintain a balance in the overall amount of water on the planet. Additionally, the Earth's gravity prevents water from escaping into space.
No dinosaurs specifically lived in the water. Plesiosaurs, pliosaurs, mosasaurs and ichthyosaurs lived in the water (but are not DINOSAURS). They are reptiles but not dinosaurs. They co-inhabited the planet with dinosaurs, in the same way that the pterosaurs ruled the air. Pterosaurs were not dinosaurs either.
Mars is the planet besides Earth that has water.