Warm-upQuiz b Think of a Word suitable for the following definitiOnS. (単語は本文中にあります)
(1) a way of dealing with a problem = ( appr0dc/レ )
(2) the natural world, including air, water, and land, that is around us
= ( enlIIOnm2A和] )
(3) the number of people who live matownoracity =(p CPMIATto n )
(4) a period of 100 years語旧c 2 )