Answer:
Microbiology - Study of very tiny living thing.
Zoology - Study of animals.
Ecology - Study of living things and environment.
Botany - Study of plants.
Explanation:
The branch of science which deals with the study of very tiny living thing i.e. microorganism is called Microbiology.
The branch of science which deals with the study of animals is called Zoology.
The branch of science which deals with the study of living things and environment is called Ecology.
The branch of science which deals with the study of plants is called Botany.
