can u answer diz ? Quiz

Question Number 1 what theory indicates that the world will come to an end A. big bang B. big crunch C. noda Question Number 2 what is an ecosystem A. a place where living and nonliving things interact B. a place of animals and plants C. i dont know Question Number 3 what is the coldest biome A. tundra B. estuary C. tropical rainforest Question Number 4 a place where saltwater and freshwater meet A. forest B. fresh water C. estuary Question Number 5 a soil that is always frozen A. permafrost B. icy soil C. ayze tuando soil