Sam and joe are trying to determine whether their ideas are scientific or pseudoscientific. sam's idea is not rejected when experiments produce different results. joe's idea gives the same result when tested repeatedly.

which statement is correct about sam and joe's idea?

both ideas could be scientific.
neither idea could be scientific.
only sam's idea could be scientific.
only joe's idea could be scientific.

The correct answer is option - Both ideas could be scientific.

Explanation:

The ideas can be scientific if they are testable and more reliable if the results are the same repeatedly performing experiments. The idea or hypothesis is tested by the experiments.

Sam's idea is not rejected because the result could be different in experiments with different scientists due to the error in the experiment or a different methods. Repeated test results make joe's idea more reliable after tested repeatedly.

Thus, the correct answer is option- Both ideas could be scientific.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.