6.0 Nature and Change
6.1 How has the earth changed since the time of the dinosaurs?
Since the time of the dinosaurs, we know that there were many animals that existed then, but they do not exist on earth now. Some of these were the dinosaurs, the mastodons, the giant bears, the saber-toothed tigers, and the giant panthers whose fossils have been found in California. We know that some places that had been underwater are now deserts, and that the continents have divided. How do we know that? Fossils of fish and other aquatic animals have been found where desert is now. Also, the climate is different because it is less warm and humid than before; there are fewer plants; the continents have separated, forming great oceans between them; the surface has changed, creating new mountains and valleys; and there are people that live on all parts of the earth.
Since the time of the dinosaurs, we know that there were many animals that existed then, but they do not exist on earth now. Some of these were the dinosaurs, the mastodons, the giant bears, the saber-toothed tigers, and the giant panthers whose fossils have been found in California. We know that some places that had been underwater are now deserts, and that the continents have divided. How do we know that? Fossils of fish and other aquatic animals have been found where desert is now. Also, the climate is different because it is less warm and humid than before; there are fewer plants; the continents have separated, forming great oceans between them; the surface has changed, creating new mountains and valleys; and there are people that live on all parts of the earth.
6.2 What has not changed?
1. Plants need the sun to make food
2. Plants make food for themselves and for all the animals on earth
3. Some species such as sharks, fish, and turtles were alive when dinosaurs were.
1. Plants need the sun to make food
2. Plants make food for themselves and for all the animals on earth
3. Some species such as sharks, fish, and turtles were alive when dinosaurs were.
6.3 What would have to happen for the dinosaurs to be able to come back?
In order for dinosaurs to be able to come back, some things would need to happen, they include:
1. We must find intact DNA of the species in question
2. We must extract the DNA from the amber
3. We must sequence the DNA — find out what the genetic code of the animal is
4. If we somehow got a whole dinosaur genome, we would somehow have to make it assemble into chromosomes
5. These chromosomes now would have to be implanted into a compatible, living, intact egg.
6. Finally, this fairy tale egg would have to be raised under the optimal conditions for that species' development, which we have little chance of inferring
So, in summary, if we could find perfectly preserved dinosaur DNA, extract and sequence it with little error, organize it into chromosomes, and place it into the living egg of the correct species in order for dinosaurs to come back to earth.
In order for dinosaurs to be able to come back, some things would need to happen, they include:
1. We must find intact DNA of the species in question
2. We must extract the DNA from the amber
3. We must sequence the DNA — find out what the genetic code of the animal is
4. If we somehow got a whole dinosaur genome, we would somehow have to make it assemble into chromosomes
5. These chromosomes now would have to be implanted into a compatible, living, intact egg.
6. Finally, this fairy tale egg would have to be raised under the optimal conditions for that species' development, which we have little chance of inferring
So, in summary, if we could find perfectly preserved dinosaur DNA, extract and sequence it with little error, organize it into chromosomes, and place it into the living egg of the correct species in order for dinosaurs to come back to earth.