WATER POLO BALLS ___ WITH A SPECIAL TEXTURE SO IT WILL NOT SLIP FR...

25. Water polo balls ___ with a special texture so it will not slip from the hands of a player.A. are covered B. cover C. are being covered D. is coveredFill in each numbered blank with one suitable word (from 26 to 30)Extinction is a normal process in the course of (26)___. Species have slowly evolved and disappeared throughout geologic time as the result of climate changes and the (27) ___ to adapt to survive competition and predation. Since the 1600s, however, the rate of extinction (28)___ rapidly because of human population growth and human resource consumption. Today, most of the world’s habitats are changing (29)___ than most species can adapt to such changes through evolution, or natural selection. The current global extinction rate is exponentially greater than the background extinction rate. Many biologists believe that we are in the middle of (30)___ greatest mass extinction episode since the disappearance of the dinosaurs 65 millions years ago.