Atmosphere The outer layer of gases of a large body in space, as plant or start;the mixture of gases that surrounds the solid earth;one of the four parts of the earth system
Bacteria Part of a classification system that divides all living things into sic kingdom bacteria includes mincroscopic single-celled organisms found in many enviroments bacteria can be associated with disease in other organisms
Energy The ability to do work orto cause a change for example the energy of a moving bowling ball knocks over pin;energy from food allows animal to energy from food