Erläuterung:
This option combines the two sentences in a clear and grammatically correct manner, providing the necessary context at the beginning of the sentence.
Erläuterung:
The word "herself" is the correct reflexive pronoun to use when referring to a singular female subject, which in this case is "my sister."
Erläuterung:
"Ubiquitous" means present, appearing, or found everywhere. In this context, it describes the plastic bag as a common and widespread artifact of twenty-first-century life.
Erläuterung:
The author's purpose for including the phrase "a collision between two massive plates in the planet’s crust" is to communicate the meaning of a scientific term, specifically, the geological process that led to the formation of the Mariana Trench.
Erläuterung:
This option clarifies that it was the bird watcher who was observing the bird feeder and seeing the cardinals, making the relationship between the observer and the observed clear.
Erläuterung:
The word "yet" can be used as a synonym for "however" to indicate a contrast between two statements. In this context, "yet" effectively conveys the contrast between the perspective from space and the perspective from the Earth's surface, similar to how "however" does.
Erläuterung:
"Commendable" is the most appropriate word choice for a letter to a patient because it conveys a sense of praise and approval for the improved cholesterol test results. It is a formal and respectful term that acknowledges the patient's efforts and achievements in maintaining their health.
Erläuterung:
The word "daunting" means intimidating or challenging, suggesting something that is difficult to overcome. "Formidable" is a synonym that conveys a similar meaning, indicating something that inspires fear or respect due to its size, power, or difficulty. In this context, "daunting challenges" refers to the difficult and intimidating nature of exploring the submerged valleys.
Erläuterung:
The word "biology" should be lowercase because it is not at the beginning of the sentence and is not a proper noun in this context. "Cell Biology 301" is the specific name of the course, so it should be capitalized.
Erläuterung:
The word "accept" means to receive or agree to something, which fits the context of receiving congratulations. The other options do not fit the context of the sentence.
Erläuterung:
The paragraph highlights the notable achievements and bravery of the individuals who have descended into the Mariana Trench, emphasizing their remarkable distinctions and accomplishments. This aligns with the main idea that these explorers are a daring and accomplished group.
