啊

Wangbowen:Parents drive him to school
Xu hanqi:Walk to school
Xie xintian:Ride bike to school
Wang lupan:Walk to school

Wangbowen:Parents drive him to school
Xu hanqi:Walk to school
Xie xintian:Ride bike to school
Wang lupan:Walk to school Cars would bring greenhouse effect to our earth,while walking could save fossil oil

tomato octopus and rice wasting food could make huge waste and a large amount of trash

Save food
Turn off the lights
Walk to school

4.The fox to eat the rabbit. If the rabbit extinction, the fox population will decline.The Fox also eat frog. So the frog will replace the rabbit, a fox food.

2.Yunnan may be the richest area in biodiversity in China.
It reduces the loss of water and soil ecological function, makes a great improvement of the ecological environment, enrichs biological diversity
1.If a area has just two or three species,this area is poor in biodiversity.Trees or grasses are the key of biodiversity

3.In Yingxiong hill,there is few species reduce because ti's protected well