Hydrogen bonds connecting base pairs must be broken.
B. How far do butterflies migrate
A, C and D are opinions not facts.
Lead I believe would be the heaviest because gold is relatively light
<em>A megaphone used by a cheerleader can allow people on the opposite side of a field to hear her better because;</em>
D. Solid objects can change the direction of sound waves; megaphones allow users to determine the general direction of the sound.
<u>Determination of the general direction of the sound lessens its dispersion and thus, it reaches the observers at a higher intensity, hence it being louder.</u>
