Which area of the central nervous system contains cerebrospinal fluid?
a)efferent tissue
b)subarachnoid space
c)dura mater
d)grey matter

In the family tree below, people with the recessive trait of attached earlobes are shaded gray.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Using the periodic table, determine which material is most likely a good conductor