Which statements correctly describe theories? Check all that apply.All theories that scientists could discover have already been written.Theories develop over time as new scientific evidence is discovered.Parts of theories cannot be disproved, but new parts can be added.Theories and laws are the same types of rules about how nature works.Theories can be changed when new fields of scientific study develop.
Answer
A
All theories that scientists could discover have already been written.
B
Theories develop over time as new scientific evidence is discovered.
C
Parts of theories cannot be disproved, but new parts can be added.
D
Theories and laws are the same types of rules about how nature works.
E
Theories can be changed when new fields of scientific study develop.
Explanation
Scientific theories develop and may be revised as new evidence becomes available, so B is correct. New fields of study can provide evidence or perspectives that lead scientists to change a theory, making E correct. Theories are not immune to disproof, and they are not the same as scientific laws: theories explain natural phenomena, while laws describe patterns or relationships.
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