In an ecological manner. / regarding ecology

(biology) The branch of biology dealing with the relationships of organisms with their environment and with each other.

Relating to ecology, the interrelationships of organisms and their environment. / Not harmful to the environment.

Relating to ecology, the interrelationships of organisms and their environment.

plural of ecology

An ideology focusing on ecology and the environment.

The application of ecological methods

(informal) beneficial (or at least harmless) to the ecology of a region

A large concrete block with a groove in the bottom face and a tongue on the top face to eliminate slippage when they are stacked. There is also a steel loop on the top face to facilitate lifting. The blocks are stacked in an offset manner to create a wall for retaining earth by means of their great mass. A wall built with them can be readily dismantled and the blocks reused (in ecological fashion).

the study of the effects of chemical compounds on the interactions of living organisms