Science Unit D Chapter 8 Lesson 7 ~ 8 7 . Pollution What is pollution ? Harmful things in the air , water , or land are called pollution . Pollution can harm living and non - living things . ? What are harmful things in the air called ? pollution What pollutes the air ? Smoke from factories pollutes the air . So does smoke from cars , planes , and forest fires . Air pollution may make people sick . They can ' t breathe the way they should . ? What pollutes the air here ? smoke from factories , cars , planes , and forest fires . What pollutes the water ? Wastes pollute the water . Wastes are things left over from factories . Dirty water is not safe to drink . Sometimes people throw trash into water . When animals eat this trash , they may get sick and die . ? What happened to the fish ? Water pollution made the fish die . What pollutes the land ? Trash pollutes the land . Factory wastes do , too . Land pollution may harm animals , plants , and soil . Plants and crops can ' t grow well in polluted soil . ? What pollutes the land here ? trash 7 Caring for Earth ' s Resources Why should people reuse things ? When people reuse things , they use them again in a new way . They don ' t throw these things away . They don ' t hae to buy new things . ? How do people reuse things here ? See above . Why should people recycle ? When people recycle , they help turn old things into new things . Old paper is used to make new paper . This means trees are not cut to make new paper . This saves trees . ? What do these children recycle ? cans , paper Why should people reduce what they use ? When people reduce what they use , they use less of it . Then there is more left over for later . You can reduce how much paper you use when you write on both sides . This saves paper . ? Who uses less paper here ? Tell how . The girl ; by using a cloth towel instead of a paper towel , she saves paper . What else can people do ? People take care of air when they drive cars less . They take care of water when they keep it clean . They take care of land when they pick up trash . I people do not do these things , some day there may not be clean air , water , or land . ? How do these people take care of resources ? They pick up trash to protect the land and water . English Lesson 25 [ We ' ve Come to Town ] Review VOCABULARY town , store , lion , park Characters Children ( C ) , Fran Field ( F ) , Sam Store ( S ) , Zina Zoo ( Z ) , Ron River ( R ) , Pedro Park ( P ) C : We ' ve come to town . Hurray ! Where should we go first today ? S : Come and see my new toys . And my games for girls and boys ! R : Come see me . Ride on a boat . You can also swim and float . F : Come see me . You ' ll have fun . Come play ball in the sun ! Z : Come and see a lion roar , Apes , birds , and so much more ! C ; There ' s so much to see and do ! Should we see the store or zoo ? P : Come see me . Sit by a tree . You can plan what you will see . C : That is what we will do . Thanks , Park ! We ' ll go see YOU !