On a test, Helena is defining energy. Which must she include in order to get her answer marked correct? making objects more compact
the ability to do work
carrying through matter and space
the bonds of atoms

Why should the united state be concerned about air pollution in china?

Which of the following is most important in making the typical seed more resistant to adverse conditions than the typical spore? a) a different type of sporopollenin b) an internal reservoir of liquid water c) integument(s) d) ability to be dispersed e) waxy cuticle

The bacteria found in soil is usually harmful and measures are taken to remove any traces of microorganisms. true or false