Question

which of these statements does not describe some aspect of a scientific theory? a once developed, a theory cannot be changed. b many observations and much evidence is needed to develop a theory. c a theory reflects an understanding of a particular part of the natural world. d scientists use the scientific method and controlled experiments to collect evidence to develop a theory.

Explanation:

Scientific theories are not static. They can be modified or even replaced as new evidence emerges. Many observations and evidence are indeed needed to form a theory. A theory represents an understanding of a natural - world aspect, and the scientific method with controlled experiments is used to gather evidence for theory - building.

Answer:

A. Once developed, a theory cannot be changed.