(Q).
Q: In vertebrates, what structure runs from the brain to the tail end of the backbone? Choices: - ribcage - aortic valve - backbone - spinal cord A:
(A).
spinal cord

(Q).
Q: Conversely, very large forces are created by liquids and solids when they try to expand but are constrained from doing sowhich is equivalent to compressing them to less than their normal volume. this often occurs when a contained material warms up, since most materials expand when they do this? Choices: - increase density - increase mass - decrease temperature - increase temperature A:
(A).
increase temperature

(Q).
Q: Which rule is a result of trends in energies and is useful in explaining why atoms form the ions that they do? Choices: - electrons rule - nutron rule - coupling rule - octet rule A:
(A).
octet rule