Biology: ECOLOGY
Ecology is known as the scientific study that provides us the information about the distribution and presences of life on this earth. Ecology takes in to account the surrounding of an organism. Ecology can be divided into abiotic and biotic. Abiotic factors include physical boundaries, sunlight, climate and geology whereas the biotic factors include all the living things and organisms. Ecology is generally considered as that branch of bio that studies the living organisms. Organisms can be studied like nucleic acid, proteins, cells, etc on many different levels.
Ecology focuses at the higher levels of organization on this earth.  In order to understand the interrelations between different organisms and living species remove towards ecology.  All living organisms including pounds, insects, animals, human beings and are living environment comes under ecology.  Fisheries, agriculture, medicine, forestry and all the urban development that is happening in the world can be explained with the help of ecology.  Ecological knowledge has provided us with the population dynamics and biodiversity in order to express the environmentalism aims.  It helps in evaluating the policies and goals of the environment. 

The behavioural relation between species is known as behavioural ecology.  All the process is like pollination, flowering of plants are explained in detail in ecology.  To study how a queen bee relates itself to the worker bees & drones.  The relationship between the species and the environment is known as environmental species.  All the changes in the bee activity caused you to the changes in the environment comes under environmental ecology.