Correct answer: 3
Paleontology-the science of fossil remains of animals, plants (microorganisms).
In the most General form:
physiology answers the question "how does it work?"(the science of functions);
ecology-the science of the environment, organisms living in it, and their interaction with each other and the environment;
selection (as a science and not practical activities for selection) - the science of breeding new or improving old varieties of plants, animal breeds, strains of microorganisms (if in the issue of the exam grade-breed-strain, in 95% of cases will be about selection)
We'll pass the biology exam for 100!
Channel @zdamna100egebio will help you with this!
Selection is funny variant)