Which statement is not applicable to scientific models?
a) models are a description of nature that can predict things about similar situations.
b) models are too complex to be used by the average person; so they are limited by who can use them.
c) models are testable ideas created by the human mind to tell stories about what happens in nature.
d) models are approximations or a sum of a real system that omits all but most essential variables of a system.

The correct answer will be option-B.

Explanation:

Scientific models are the simplified visual representations of the complex ideas, object or a system.

The scientific models play a central role in the science as they are used in the research based on the predictions to prove or reject the hypothesis as well provides a good medium of explanation of a complex process.

Since the models are very simple representations of the complex process which can be used and understand easily by a layman, therefore, Option-B is the correct answer.

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.

i think the answer is c hope this