Competition plays a role in the way populations change because depending on what type of competition you're talking about, since more than one group wants one thing the population of one of the group will decrease.
The answer would be B. External Fertilization because the combination of Sperm and Egg happen outside or externally.
The correct answer to this question is the following.
Unfortunately, your question is incomplete. You did not attach the two stories. So we do not know what the topic is. You also forgot to attach a link or the title of these stories.
However, trying to help you we did some deep research and can comment on the following.
There are two stories about Conservation Activity. One is about "Using Forest Wisely" and the other is about "Community Conservation."
If that is the case, we can say that the economics delay scientists' first attempts for conservation affect the conservation study and the environment in that cutting those trees for economic purposes directly impact the wildlife and nature of the region.
Trees are the sentient beings that produce the oxygen human beings need to breathe fresh air. They clean the air because trees "breathe" carbon dioxide. The uncontrolled cutting down of trees could affect because resources could be scarce, increasing prices of goods.
One of the stories refers to the case of gorillas in places such as Rwanda or Uganda, risking the habitat of these animals and the entire environment of those forests, which also results in affecting the economy of the places.
