they use what their cells are made up of. they used to do how they look for example if the beaver and the chipmunk looked alike they would say that they are in the same group.
Their foot
coloring and size
Biologists use a system called taxonomy to identify and classify organisms. This system categorizes organisms based on shared characteristics and genetic relationships. By examining an organism's physical traits, genetic information, and evolutionary history, biologists can assign it to a specific group in the taxonomic hierarchy.
Biologists no longer use Aristotle's system for classifying animals because Carolus Linnaeus invented a better system (known as taxonomy) which has replaced the previous Aristotelian system.
Biologists group living things into kingdoms based on fundamental characteristics such as cell structure, mode of nutrition, and reproduction methods. These characteristics help categorize organisms into broad groups that share common features.
A biological field is for biologists, they use nature as a laboratory and combine the principles of biology, the physical sciences and mathematics to study the diversity and interactions of plants, animals and microorganisms in their natural environments. Thus, field biologists include ecologists, zoologists, botanists, population biologists, taxonomists, physiologists, wildlife and fisheries biologists, microbiologists and others.
from other animals they get it
Biologists use scientific notation to compute very large or very small numbers.
They inform them how things evolved and can show the health etc of people and animals which historians can use to discover habits of people etc.
Aristotle's system of classification was based on superficial similarities and did not reflect true evolutionary relationships. Modern biologists use a classification system based on evolutionary relationships to better understand the genetic and biological relatedness between species. This system, known as cladistics, helps biologists make more accurate predictions about the characteristics of different organisms.
mfjdskfs
Biologists use classification so that they can keep track of living things. This is how they are able to record information on all the many species that live on Earth.