Complete the following sentence with the best phrase below.
Removing just one species from an ecosystem
B.would have little effect; unless it was a key stone
D.would have a negative effect; especially if it was a keystone species
What do you think?
I am sure the answer is B.
To complete the sentence, you would choose option D: "Removing just one species from an ecosystem would have a negative effect; especially if it was a keystone species."
To determine the best phrase, it is important to understand the concept of a keystone species and its impact on an ecosystem. A keystone species is a species that plays a crucial role in maintaining the balance and structure of an ecosystem. Its absence can have far-reaching consequences on the surrounding environment.
To reach this answer, you would:
1. Read and understand the given sentence: "Removing just one species from an ecosystem."
2. Recognize the phrase "especially if it was a keystone species" in option D, which suggests that the effect would be negative.
3. Consider the significance of a keystone species and how its removal would disrupt the balance and functioning of the ecosystem.
4. Evaluate the other option, option B, which suggests that the effect would be little unless the species was a keystone. However, this phrase does not emphasize the negative consequence as strongly as option D does.
Thus, option D is the best phrase to complete the sentence.