4. Why do marine scientists often take more than one representative sample? (1 point)
A. Populations can vary even within the same region.
B. There are often mistakes in representative samples.
C. There is a long tradition of taking several samples when documenting population.
D. Marine scientists lack the technology to determine the population at the ocean’s depths.

Dentify the reasons that support the claim. check all that apply. claim: students should be required to take at least one online class. learning entirely remotely is one option that many schools offer. online classes provide more flexibility in students’ schedules. everyone enjoys using a computer, so online learning is more fun than traditional learning. one online class should be a mandated part of any school’s curriculum. students learn valuable skills they can apply in online college courses.

How does the author foreshadow trouble in the prison? support your answer with explicit textual evidence.

Use any method to combine the following sentences into one sentence. elvis presley died in 1977. his music is still popular today. graceland in memphis was his home.