Initiation, elongation, and then termination
A is the answer because it multiplies itself by 3 each time
Answer:
Substrate. The substrate is the surface on which the river organisms live. It may be inorganic, consisting of geological material from the catchment area such as boulders, pebbles, gravel, sand or silt, or it may be organic, including fine particles, leaves, wood, moss and plants.
Answer:
Reactivity.
Explanation:
I’m sorry, I don’t really know how to explain this. I just have it memorized. Sorry I couldn’t help more, best of luck!