Question

Which of the following are true of scientific hypotheses?

(Check all that apply.)
They can represent someone's opinion about why change occurs.
O They can be tested through observations of natural events.
O They must be rejected if no evidence is found to support them.
They must be agreed upon by all scientists before they are tested.
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Answer 1

I think it's these two

O They can be tested through observations of natural events.

O They must be rejected if no evidence is found to support them