1.
the act of trying to save resources.
2.
the natural area in which peoplelive including the water, air, soil,and plant and animallife.
3.
a unit of length in the metric system.
4.
a unit of volume used in the US.
5.
meter. Acubic meteris a unit of volume that is equal to the volumeofa cube with sides of one length.
6.
any kind of harmful foreign matter in a substance suchasair or water.
