Are you asking what their predators are? As adults, the Australian meat ants can eat them. As tadpoles, they are eaten by camen, catfish, cat-eyed snakes.
Hydra reproduce through a process called budding, where a tiny knob-like structure begins to grow. As it continues to grow, it falls off, producing a new hydra.
DNA has a double helix structure. The outer edges are formed by alternating deoxyribose sugar molecules and phosphate groups. The two strands run in opposite directions one going in a 3 to 5 the other going in a 5 to 3.
