Question

1. how is a theory different from a guess? choose the best answer. * a. a theory cannot be disproven; a guess can be b. a theory is backed up by hard evidence; a guess is not c. a theory is agreed upon by scientists; a guess is only agreed on by lay people d. a theory is usually very old; a guess is usually very new

Explanation:

A theory is a well - substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. A guess is a random or unsubstantiated supposition. So, a theory is backed up by hard evidence while a guess is not.

Answer:

b. A theory is backed up by hard evidence; a guess is not