Which of the following statements concering scientific hypotheses is fake? They must be testable experimentally.
They are constructed based on observations,
They are not always correct.
They are the same as theories.

Predict the results of a two base insertion or deletion in a strand of dna that codes for a protien, how does this differ from a three base insertion or deletion?

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?

What are antigens and antibodies? how are they involved in the body’s response to incompatible blood?