Answer:
In some ways, monotremes are very primitive for mammals because, like reptiles and birds, they lay eggs rather than having live birth. In a number of other respects, monotremes are rather derived, having highly modified snouts or beaks, and modern adult monotremes have no teeth.
True, Methane is a greenhouse gas
63 in water 100/g KNO3 Potassium nitrate
True because some fossils only lived in certain places
