Solution:

• Ecology is the branch of science that studies the interactions of organisms and their relationship with the environment.

• Ecology can be defined as the science that studies the abundance and classification of living things in nature, the interactions between living things and with other living things, and the exchange and flow of energy and matter.

• The word ecology is derived from the Greek words Oikos, meaning home, and Logos, meaning knowledge.

• In 1870, the German zoologist Ernst Haeckel coined the term ecology for the first time.