notting
No.
a fossil
Scientists classify vertebrate into different groups by the way the animal looks or how big or small it is
Scientists can use satellite images to asses the conservation status of the endangered animals. They are then able to use the results to find which species are threatened and determine the priority for future protection.
Scientists determine evolutionary relationships between animal phyla using evidence from comparative anatomy, fossil records, molecular genetics, and embryology. By studying similarities and differences in these aspects across different animal groups, researchers can infer how they are related to each other in the tree of life.
nanometer
Although many scientists try to explain that animal testing helps the environment, there is no evidence to support this. Although it does not help the environment, there is no evidence that says it harms the environment, either.
Microscopes
DNA evidence might be used to confirm scientists' conclusions about any relationships between any animal and how closely related they are.
By analyzing all this data, scientists can learn new ways to help control animal populations, determine what impact development might have on an animal population, and determine if there are enough individuals of a particular species in an area to allow for reproduction.
Because scientists can not obtain the complete DNA of the extinct animal
They look for the animal bones which are found in proximity to their settlements.
Scientists can examine the contents in coprolites. If they contain bones, teeth, etc., then they can determine the animal was a carnivore. If they contain only certain minerals that can be traced to plants, with no bone, teeth, etc., they can determine the animal was more than likely an herbivore.
The age of a plant or animal in a fossil is determined by radiocarbon dating. This means scientists measure the amount of a special type of carbon in the fossil, to determine the date.
Scientists can learn many things from fossils:What an ancient animal's bones looked likeWhat ancient plants looked likeHow an ancient animal's body might have lookedWhat kind of environment existed in that area millions of years agoHow animals and plants probably interacted millions of years ago
a centipede