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How long have reptiles inhabited the earth?
Reptiles have been on Earth for over 300 million years, evolving from early amphibians. They have survived several mass extinction events and continue to be diverse and successful today.
What is the name for a string of eggs laid by a toad?
Known as 'spawn' which is a mass of eggs laid by fishes, amphibians, mollusks and amphibians
How did the first reptiles evolve on earth?
The first reptiles evolved from amphibians about 310-320 million years ago. It is known that amphibians live life in both water and land, but have to return to the water to lay their soft eggs. As amphibians differentiated one group known as reptiliomorph labyrinthodonts became more accustomed to the dry land. They spent more time on land than in water. Eventually they adapted by growing hard, dry skin rather than the soft, wet skin of amphibians. They also adapted by laying hard shelled eggs on land rather than laying soft eggs in the water. The first reptiles were largely overshadowed by the larger amphibians, which were more diverse and dominant prior to the Permian mass extinction. Hylonomus is the oldest-known reptile, and was about 8 to 12 inches (20 to 30 cm) long. Westlothiana has been suggested as the oldest reptile, but is for the moment considered to be more related to amphibians than amniotes.
Do waves carry mass?
No, waves do not carry mass. Waves are disturbances that propagate through a medium, such as sound waves in air or water waves in the ocean. They carry energy and momentum, but not mass.
How was the Triassic period ended?
The Devonian time period ended because of a mass extinction of several species of fish, amphibians and other types of reptiles.
How were ancient amphibians different from modern amphibians?
Prior to the Permian mass extinction amphibians were a lot more diverse. They were large and small and were at one time, the dominant land animals. Some were large and hunted down smaller animals and others were small and/or herbivorous. The Permian mass extinction which destroyed around 90% of land life greatly reduced this diversity, and amphibians from then on were small and occupied fewer ecological niches.
What evolved during the paleozic era?
During the Paleozoic Era, the first land plants, insects, fish, amphibians, and reptiles evolved. This era also saw the evolution of early mammals and the diversification of life in the oceans. The end of the Paleozoic Era was marked by a mass extinction event that wiped out many species, paving the way for the rise of new organisms in the following eras.
What is a mass in the body?
mass in the body is just protons
Will the decisions from your Mass Effect replay carry over to Mass Effect 2?
Yes, the first Mass Effect replays carry into Mass Effect 2. The only things that don't carry over are the level ups, weapons, and armor. And that is because the combat system on Mass Effect 2 is completely different than the first.
When was the first reptile created?
Hello.First of all, these new-fangled reptiles could mate on dry land! Male reptiles came equipped with an ingenious appendage enabling them to insert sperm inside the female's body. Moreover, inside the female, an eggshell was formed around the developing embryo, and this enabled the egg to be laid on dry land -- something impossible for primitive amphibian eggs. Dry-land nests can be better defended than an amphibian's typically gelatinous egg-mass simply extruded into water.With regard to the second problem, that of retaining water in their bodies, the Gray Rat Snake at the right clearly shows the reptilian "invention" that helped solve that problem: These new reptiles were covered with fairly waterproof scales, so that water stayed inside their bodies much better than it did in the amphibians'. In the picture, each of those little blocky things covering the entire head is a scale. The third problem, that of keeping the body warm when air temperature grew cold, was not overcome by the reptiles. Or, maybe it was in some of them... All of today's reptiles are thought to be "cold blooded," but some paleontologists believe that at least a few species of dinosaurs, which were reptiles, were able to keep their body temperatures up when cold weather arrived -- that they were "warm blooded." The debate of whether some dinosaurs were warm blooded is still going on. These epoch-making advancements of reptiles over amphibians were so beneficial to reptiles that for many millions of years reptiles "ruled the earth." Probably you've heard of the Age of Dinosaurs. If an evolutionary biologist from another planet had visited Earth during the Jurassic period 150,000,000 years ago, he, she, or it surely would have assumed that eventually descendants of the reptiles would be the first Earthlings to set foot on the Moon, and to invent computers. However, something happened about 65 million years ago that killed off all the great dinosaurs, and many other life forms as well. Was it a comet hitting the earth? Or did the first mammals, which were small rat-like things, eat all the dinosaurs' eggs? Or something else? This is one of the most intriguing of all questions concerning the evolution of life on earth.Thank you.
How can mass be defined in terms of?
The mass of a body is the measure of inertia of that body.
Is mass of a body affected on charging?
No, the mass of a body is not affected by charging it. Charging a body simply redistributes the charges on its surface and does not change its mass.
