A.Too many animals eating the plants ill one small area. B.Planting too much vegetation in one small area. C.Too many people building houses in one small area. D.Bringing together the wrong kinds of animals and plants.
【简答题】For an online grocery player, it is very difficult, very _______(cost), to deliver a full basket quickly, but for Hema, it's got a mobile app, it's got mobile _______(pay) , and also it's built 20 phy...