I’m pretty sure the answer is A but if you already ruled that out try B
<span>The RNA world is the hypothesized format of chemical life that existed prior to our current DNA and RNA world. In the RNA world, RNA molecules formed in the primordial soup and began to evolve by self-replication and mutation. This led to increased complexity, natural selection of "better" RNA and diversification of RNA based life.</span>
Well one way is how hurricane winds and such can blow birds off course. Another is how when trees fall down that forces animals to relocate.
Answer:
Human Activitys.
Explanation
The goods we use, travel around the world very quickly, and they often carry uninvited species with them.
Answer:
As a result of photosynthesis oxygen and sugar
