1.Resin is a substance that ---in water.





2.--hardiness, daylilies can be cultivated particularly easily.





3.A biologist does not merely describe organisms, but tries to learn ---act as they do.





4.Vaporization in connection with general --- has a marked effect on long � term climate.





6.--- raw materials into useful products is called manufacturing.





7.Alexander Graham Bell once told his family that he would rather be remembered as a teacher of the deaf ---of the telephone.





8.Because its leaves remain green long after being picked, rosemary --- associated with the idea of remembrance.





9.-- that of iron construction, the technology for constructing buildings with developed rather rapidly. reinforced concrete





10.Although adult education in the United States began in colonial times, --- chief growth has taken place since the 1920�s.