In parasitism, one organism harms another organism (the host). An example would be fleas living in cats/dogs; they feed on their blood.
Therefore the answer is A is harmed, and B is helped.
Answer:
1. Ask a question
2. Make a hypothesis
3. Conduct experiment
4. Make observations and record them
5. draw conclusions
6. write a conclusion
Explanation:
Speciation<span> is the term used to describe the formation of a new </span>species<span> due to </span>natural selection<span>.</span>
They can create competition within a certain niche
